liberal bias definitely affects the news.
Friday, May 14, 2010
What variables beyond journalists control affect news?
i'm wanna write something about this. anyone who could shair or impart their perspectives regarding this topic?What variables beyond journalists control affect news?
liberal bias definitely affects the news.beauty
liberal bias definitely affects the news.
What is the role of the responding variable in a controlled experiment?
What is the role of the responding variable in a controlled experiment?
please help meWhat is the role of the responding variable in a controlled experiment?
The responding variable is the variable that will change as a result of the change in the manipulated variable. Let look at its role using a hypothetical example. Assume that you are trying to test whether a certain pill will lower blood pressure. Your measurement of blood pressure before and after the treatment is your responding variable. Your controlled experiment is as follows:
1. Sign up a group of people who agree to be studied.
2. Randomly assign people into a treatment and a control group.
3. Measure the subjects blood pressure.
4. Administer a placebo (sugar pill) to the control group and your experimental pill to the treatment group.
5. Measure the subjects blood pressure.
6. Perform a statistical test that examines whether the responding variable (blood pressure measurement) for the treatment group decreased by more than the responding variable of the control group.
please help meWhat is the role of the responding variable in a controlled experiment?
The responding variable is the variable that will change as a result of the change in the manipulated variable. Let look at its role using a hypothetical example. Assume that you are trying to test whether a certain pill will lower blood pressure. Your measurement of blood pressure before and after the treatment is your responding variable. Your controlled experiment is as follows:
1. Sign up a group of people who agree to be studied.
2. Randomly assign people into a treatment and a control group.
3. Measure the subjects blood pressure.
4. Administer a placebo (sugar pill) to the control group and your experimental pill to the treatment group.
5. Measure the subjects blood pressure.
6. Perform a statistical test that examines whether the responding variable (blood pressure measurement) for the treatment group decreased by more than the responding variable of the control group.
The Importance of a controlled variable?
What is The Importance of a controlled variable?The Importance of a controlled variable?
In the scientific method, the control variable is the variable that is not changed in the experiment. If you do not have a control variable then you may not know if someting else like the measurement equipment is not affecting the results, or just random variation is giving the result.
In the scientific method, the control variable is the variable that is not changed in the experiment. If you do not have a control variable then you may not know if someting else like the measurement equipment is not affecting the results, or just random variation is giving the result.
In an experiment, the CONTROL group is used to test the effect of the INDEPENDENT VARIABLE... True or False?
I thought it was True, but I was wrong (it was a question on a test).In an experiment, the CONTROL group is used to test the effect of the INDEPENDENT VARIABLE... True or False?
False; the control is used to compare the effect of an independent variable as nothing is used on the controlIn an experiment, the CONTROL group is used to test the effect of the INDEPENDENT VARIABLE... True or False?
False because the control is not altered. It is just used as a base for comparison
The control group is to maintain a known component of the experiment. The independent variable is compared to the control value to determine results. The wording of the question is very tricky!
False; the control is used to compare the effect of an independent variable as nothing is used on the controlIn an experiment, the CONTROL group is used to test the effect of the INDEPENDENT VARIABLE... True or False?
False because the control is not altered. It is just used as a base for comparison
The control group is to maintain a known component of the experiment. The independent variable is compared to the control value to determine results. The wording of the question is very tricky!
How are control variables and expermental variables used in scientific investigations?
Data is collected for various values of the experimental variable while the controlable variables are kept constant.
In chemical and some biological laboratory tests where one wishes to quantify a particular element or compound in a sample, the procedure calls for using a known standard and/or a control. Sometimes there is a high contol and a low control, these being samples of carefully established known values.
Where results are to be primarily qualitative, a positive control and a negative control are often used.How are control variables and expermental variables used in scientific investigations?
Simple logic prevails. Isolate the condition you want to test, and eliminate extraneous influence from all other variables. In some experiments they use a ';double blind'; strategy to isolate the desired response. However, you need to test a large enough population of outcomes for the result to be statistically significant. The sample size is determined by the mathematical laws of probability and statistics.
In chemical and some biological laboratory tests where one wishes to quantify a particular element or compound in a sample, the procedure calls for using a known standard and/or a control. Sometimes there is a high contol and a low control, these being samples of carefully established known values.
Where results are to be primarily qualitative, a positive control and a negative control are often used.How are control variables and expermental variables used in scientific investigations?
Simple logic prevails. Isolate the condition you want to test, and eliminate extraneous influence from all other variables. In some experiments they use a ';double blind'; strategy to isolate the desired response. However, you need to test a large enough population of outcomes for the result to be statistically significant. The sample size is determined by the mathematical laws of probability and statistics.
Ice cube experiment controlled variable?
I'm doing a science experiment in which i have 3 ice cubes and put salt over one of them, sugar over one of them, and nothing over one of them and then measure the time or rate it takes to melt the ice cube.
is this a controlled experiment and what would be the responding and controlled variable?
Thanks in advance!Ice cube experiment controlled variable?
Yes, you are controlling all but one factor. For instance you are not heating one of them while letting the others thaw out naturally in addition to the conditions you've specified. That would not be controlled. It is controlled since you are varying one factor. The responding variable is the time it takes for each ice cube to melt, but this is due to the one variable you changed, which is the addition of a substance to the ice cube. The controlled variable is the ice cube. You are using the same identical ice cube in each of the three situations, and are comparing it to the control--which is the ice cube that has no substance added to it. Hope this helps.
is this a controlled experiment and what would be the responding and controlled variable?
Thanks in advance!Ice cube experiment controlled variable?
Yes, you are controlling all but one factor. For instance you are not heating one of them while letting the others thaw out naturally in addition to the conditions you've specified. That would not be controlled. It is controlled since you are varying one factor. The responding variable is the time it takes for each ice cube to melt, but this is due to the one variable you changed, which is the addition of a substance to the ice cube. The controlled variable is the ice cube. You are using the same identical ice cube in each of the three situations, and are comparing it to the control--which is the ice cube that has no substance added to it. Hope this helps.
May u give me an example of a controlled variable, sensor, controlled center & effector in everyday situations?
the real world is not a controlled environment like a lab
the only thing I can think of are traffic signs and etcMay u give me an example of a controlled variable, sensor, controlled center %26amp; effector in everyday situations?
uhhhhh Pi???May u give me an example of a controlled variable, sensor, controlled center %26amp; effector in everyday situations?
A controlled variable is a factor which could be changed but is kept the same in order to measure two other factors.
An everyday e.g.: Keeping the length of time that one runs for in order to measure the amount of weight lost over a period of weeks.
A sensor is a device which monitors a 'felt' factor.
An everyday e.g.: An industrial Air Con in a greenhouse, they take the temperature every couple of minutes, if its too hot, the air con is turned on, if too cold, its turned off.
A controlled center is a point from which all variables are controlled.
An everyday e.g.: In a hyroponicum, the computers control water temperatures, nutrient and element levels in the plants etc.
And thus the effector is a variable which affects these variables.
An everyday e.g.: A bug or insect which eats or infects the plants, limiting growth.
Hope this helps.
I may, we'll see.beauty
the only thing I can think of are traffic signs and etcMay u give me an example of a controlled variable, sensor, controlled center %26amp; effector in everyday situations?
uhhhhh Pi???May u give me an example of a controlled variable, sensor, controlled center %26amp; effector in everyday situations?
A controlled variable is a factor which could be changed but is kept the same in order to measure two other factors.
An everyday e.g.: Keeping the length of time that one runs for in order to measure the amount of weight lost over a period of weeks.
A sensor is a device which monitors a 'felt' factor.
An everyday e.g.: An industrial Air Con in a greenhouse, they take the temperature every couple of minutes, if its too hot, the air con is turned on, if too cold, its turned off.
A controlled center is a point from which all variables are controlled.
An everyday e.g.: In a hyroponicum, the computers control water temperatures, nutrient and element levels in the plants etc.
And thus the effector is a variable which affects these variables.
An everyday e.g.: A bug or insect which eats or infects the plants, limiting growth.
Hope this helps.
I may, we'll see.
Cellular respiration ( variable and the control)?
For the three sections of the experiment, identify the variable and the control:
a. cell respiration rate of germinating peas vs. cellular respiration rate of dry peas at the same temperature.
b. cell respiration rate of germinating peas at one temperature vs. cell respiration rate of germinating peas at a different temperature
c. cell respiration rate of dry peas at one temperature vs. cell respiration rate of dry peas at a different temperature
Please Help...Cellular respiration ( variable and the control)?
In all three experiments, you are looking at the effect of germinating or dry seed and temperature on the rate of cellular respiration. Your control is the investigated factor that doesn`t change, and your variable is the factor you are altering in that particular experiment. So, your control and variable in each of the experiments is:
a. control - temperature, variable - dry or germinating
b. control - germinating, variable - temperature
c. control - dry, variable - temperatureCellular respiration ( variable and the control)?
Variable is what changes, the control is what is kept the same. Usually, the base conditions are the control, and if you do something wacky that is considered a variable.
So usually something like room temperature would be a control, and hot or cold temps would be variables. With the first one, you would probably use dry as control, and germinating as your variable (that one is a tricky one)!
a. cell respiration rate of germinating peas vs. cellular respiration rate of dry peas at the same temperature.
b. cell respiration rate of germinating peas at one temperature vs. cell respiration rate of germinating peas at a different temperature
c. cell respiration rate of dry peas at one temperature vs. cell respiration rate of dry peas at a different temperature
Please Help...Cellular respiration ( variable and the control)?
In all three experiments, you are looking at the effect of germinating or dry seed and temperature on the rate of cellular respiration. Your control is the investigated factor that doesn`t change, and your variable is the factor you are altering in that particular experiment. So, your control and variable in each of the experiments is:
a. control - temperature, variable - dry or germinating
b. control - germinating, variable - temperature
c. control - dry, variable - temperatureCellular respiration ( variable and the control)?
Variable is what changes, the control is what is kept the same. Usually, the base conditions are the control, and if you do something wacky that is considered a variable.
So usually something like room temperature would be a control, and hot or cold temps would be variables. With the first one, you would probably use dry as control, and germinating as your variable (that one is a tricky one)!
Cellular respiration ( variable and the control)?
For the three sections of the experiment, identify the variable and the control:
a. cell respiration rate of germinating peas vs. cellular respiration rate of dry peas at the same temperature.
b. cell respiration rate of germinating peas at one temperature vs. cell respiration rate of germinating peas at a different temperature
c. cell respiration rate of dry peas at one temperature vs. cell respiration rate of dry peas at a different temperature
Please Help...Cellular respiration ( variable and the control)?
In all three experiments, you are looking at the effect of germinating or dry seed and temperature on the rate of cellular respiration. Your control is the investigated factor that doesn`t change, and your variable is the factor you are altering in that particular experiment. So, your control and variable in each of the experiments is:
a. control - temperature, variable - dry or germinating
b. control - germinating, variable - temperature
c. control - dry, variable - temperatureCellular respiration ( variable and the control)?
Variable is what changes, the control is what is kept the same. Usually, the base conditions are the control, and if you do something wacky that is considered a variable.
So usually something like room temperature would be a control, and hot or cold temps would be variables. With the first one, you would probably use dry as control, and germinating as your variable (that one is a tricky one)!
a. cell respiration rate of germinating peas vs. cellular respiration rate of dry peas at the same temperature.
b. cell respiration rate of germinating peas at one temperature vs. cell respiration rate of germinating peas at a different temperature
c. cell respiration rate of dry peas at one temperature vs. cell respiration rate of dry peas at a different temperature
Please Help...Cellular respiration ( variable and the control)?
In all three experiments, you are looking at the effect of germinating or dry seed and temperature on the rate of cellular respiration. Your control is the investigated factor that doesn`t change, and your variable is the factor you are altering in that particular experiment. So, your control and variable in each of the experiments is:
a. control - temperature, variable - dry or germinating
b. control - germinating, variable - temperature
c. control - dry, variable - temperatureCellular respiration ( variable and the control)?
Variable is what changes, the control is what is kept the same. Usually, the base conditions are the control, and if you do something wacky that is considered a variable.
So usually something like room temperature would be a control, and hot or cold temps would be variables. With the first one, you would probably use dry as control, and germinating as your variable (that one is a tricky one)!
Potato Lab osmosis; Dependent,Independent and Control variables?
I cannot figure this out!
We did a Lab and put potatoes like cubes in a batch of tap water and one in a batch of salt water; for osmosis I need to know the independent variables, control variables and the Dependent variables. It is too hard please help Quickest correct ans. gets 10pts.Potato Lab osmosis; Dependent,Independent and Control variables?
The independent variable is aspect of the experiment that you are changing. In this case, you are changing the type of liquid the potato is immersed in. Your control variable is the normal water, and the experimental variable is salt water. The dependent variable is what you are measuring, i.e. final potato size.Potato Lab osmosis; Dependent,Independent and Control variables?
? srry
We did a Lab and put potatoes like cubes in a batch of tap water and one in a batch of salt water; for osmosis I need to know the independent variables, control variables and the Dependent variables. It is too hard please help Quickest correct ans. gets 10pts.Potato Lab osmosis; Dependent,Independent and Control variables?
The independent variable is aspect of the experiment that you are changing. In this case, you are changing the type of liquid the potato is immersed in. Your control variable is the normal water, and the experimental variable is salt water. The dependent variable is what you are measuring, i.e. final potato size.Potato Lab osmosis; Dependent,Independent and Control variables?
? srry
Define independent, dependent variable and control ?
The dependent variables are those that are observed to change in response to the independent variables.
The independent variables are those that are deliberately manipulated to invoke a change in the dependent variables.
Control variables are those variables that are not changed throughout the trials in an experiment.Define independent, dependent variable and control ?
im pretty sure that x is the independent variable and y is the dependent variabe but i dunno what control is. SorryDefine independent, dependent variable and control ?
math stuff
The independent variables are those that are deliberately manipulated to invoke a change in the dependent variables.
Control variables are those variables that are not changed throughout the trials in an experiment.Define independent, dependent variable and control ?
im pretty sure that x is the independent variable and y is the dependent variabe but i dunno what control is. SorryDefine independent, dependent variable and control ?
math stuff
Experiment v.s. control, and manipulative variable v.s. responding variable?
oh and relationship among hypothesis, theory, and scientific law and also chemistry v.s. physicsExperiment v.s. control, and manipulative variable v.s. responding variable?
...
Experiment is what happens when you take a variable and ';control'; all other aspects of the environment for the procedure.
The manipulative variable is the variable that you change in an experiment in order to see what happens to the responding variable.
Chemistry deals with elements, formulas and reactions, while physics deals with laws of motion and inertia.Experiment v.s. control, and manipulative variable v.s. responding variable?
uuuuh.....the second one. haha
don't know. sorry. ciao ciao. mua.
Elena
...
Experiment is what happens when you take a variable and ';control'; all other aspects of the environment for the procedure.
The manipulative variable is the variable that you change in an experiment in order to see what happens to the responding variable.
Chemistry deals with elements, formulas and reactions, while physics deals with laws of motion and inertia.Experiment v.s. control, and manipulative variable v.s. responding variable?
uuuuh.....the second one. haha
don't know. sorry. ciao ciao. mua.
Elena
How do vms's ( Variable Message Signs) communicate with traffic control?
im talking about the one's in the uk by the wayHow do vms's ( Variable Message Signs) communicate with traffic control?
I believe they are controlled from the area police HQ.
How its actually done i can only guess, a few keystrokes are made then the info is sent to the local controller for that sign. If you look on motorways some grey boxes near signs have a laser warning sticker on them, so perhaps the info comes down via laser on a fibre optic cableHow do vms's ( Variable Message Signs) communicate with traffic control?
VMS can use a variety of technology to communicate with the regional control centre. In the UK they can use the Internet (TCP/IP), GSM, Corporate Network (TCP/IP)beauty
I believe they are controlled from the area police HQ.
How its actually done i can only guess, a few keystrokes are made then the info is sent to the local controller for that sign. If you look on motorways some grey boxes near signs have a laser warning sticker on them, so perhaps the info comes down via laser on a fibre optic cableHow do vms's ( Variable Message Signs) communicate with traffic control?
VMS can use a variety of technology to communicate with the regional control centre. In the UK they can use the Internet (TCP/IP), GSM, Corporate Network (TCP/IP)
Why is it important to control variables in an experiment?
scientific inquiryWhy is it important to control variables in an experiment?
If you don't understand your variables, how can you make a valid conclusion on your experiment?
The conclusion would be meaningless without knowing exactly what went into the results, that is, the variables.Why is it important to control variables in an experiment?
bc otherwise change could be attributed to more than just the one thing you're experimenting about.
Simply put, you want to make sure that the final result of your experiment is due to the principle being studied, and not an unknown cause.
Too many variables make computation of results much more complex ( assuming in your final analysis you want to prove a relationship by a formula) and render you result more inaccurate by introducing a error of margin with every variable
If you don't control the variables, how do you know what causes the change you are measuring?
without a controlled variable you wouldn't be able to find specific data. You will have lots of data but none of it relevent with what your looking for...for instance....you want to find out in which soil that a tomato plant grows best in...if you change the temperature of the air and the amount of water in each tomato as well as the type of soil.....you wouldn't be able to know exactly which soil is best due to all the other variables.
Are you testing the experiments or the variables
to keep your results reasonable. if you dont controll the variables anything could vary the results and you could never know what it was
when variables are not controlled you won't know why the outcome is what it is and you can't prove anything
an experiment by definition must be controlled.....each experiment can only have a limited number of variables or you are not comparing apples to apples so to speak.
if you dont control variables then you havent solved anything, for instance, you wana know why the barrel exploded. Ok so you find a barrel and kick it, it dosent explode, so what did you learn? nothing, because they werent the same type of barrel, you have to control variables to learn what is causing what you want to know.
It is important to know and control variables in any experiment in order to make the experiment reproducible outside of the lab.
the control of variable in an experiment is to reduce the risk that the results of the experiment are influenced by anything besides the variable being tested
Think about if you were looking at temperature and air pressure as two variables that affect a certain process. If you want to know how the temperature affects the process you must control the air pressure so that the only difference in the experiments is the temp. If you don't control a variable it will be nearly impossible to find the affect of a single variable.
It is pertinent to control the variables of any experiment. If all factors are not controlled the data is not concrete. If you have factors contributing to changing the eventual outcome you will never get the information correctly. This is another reason why it is always important to run a ';control'; set along with any experiment.
that way you know you are getting acurate results. so you can duplicate the experimentif need be and get the EXACT same thing.
If you don't control the variables and let them go crazy the conclusion that you come up with will be invalid. Think about it this way...when you cook something, let's say rice and you add too much water you will end up with porridge. If you don't add enough water then you end up with hard rice. The variable here is water. You need to control it to get the results you want. It's not the best analogy but hopefully you get the point.
Variables are the things that you change or keep the same in your experiment. If you change more than one thing, how do you know which change affected the results? If you change just one thing, than the results will be attributed to this one change.
Well the other day my variables got out of control, those damn chickens got everywhere, had to spray paint em.
If you don't understand your variables, how can you make a valid conclusion on your experiment?
The conclusion would be meaningless without knowing exactly what went into the results, that is, the variables.Why is it important to control variables in an experiment?
bc otherwise change could be attributed to more than just the one thing you're experimenting about.
Simply put, you want to make sure that the final result of your experiment is due to the principle being studied, and not an unknown cause.
Too many variables make computation of results much more complex ( assuming in your final analysis you want to prove a relationship by a formula) and render you result more inaccurate by introducing a error of margin with every variable
If you don't control the variables, how do you know what causes the change you are measuring?
without a controlled variable you wouldn't be able to find specific data. You will have lots of data but none of it relevent with what your looking for...for instance....you want to find out in which soil that a tomato plant grows best in...if you change the temperature of the air and the amount of water in each tomato as well as the type of soil.....you wouldn't be able to know exactly which soil is best due to all the other variables.
Are you testing the experiments or the variables
to keep your results reasonable. if you dont controll the variables anything could vary the results and you could never know what it was
when variables are not controlled you won't know why the outcome is what it is and you can't prove anything
an experiment by definition must be controlled.....each experiment can only have a limited number of variables or you are not comparing apples to apples so to speak.
if you dont control variables then you havent solved anything, for instance, you wana know why the barrel exploded. Ok so you find a barrel and kick it, it dosent explode, so what did you learn? nothing, because they werent the same type of barrel, you have to control variables to learn what is causing what you want to know.
It is important to know and control variables in any experiment in order to make the experiment reproducible outside of the lab.
the control of variable in an experiment is to reduce the risk that the results of the experiment are influenced by anything besides the variable being tested
Think about if you were looking at temperature and air pressure as two variables that affect a certain process. If you want to know how the temperature affects the process you must control the air pressure so that the only difference in the experiments is the temp. If you don't control a variable it will be nearly impossible to find the affect of a single variable.
It is pertinent to control the variables of any experiment. If all factors are not controlled the data is not concrete. If you have factors contributing to changing the eventual outcome you will never get the information correctly. This is another reason why it is always important to run a ';control'; set along with any experiment.
that way you know you are getting acurate results. so you can duplicate the experimentif need be and get the EXACT same thing.
If you don't control the variables and let them go crazy the conclusion that you come up with will be invalid. Think about it this way...when you cook something, let's say rice and you add too much water you will end up with porridge. If you don't add enough water then you end up with hard rice. The variable here is water. You need to control it to get the results you want. It's not the best analogy but hopefully you get the point.
Variables are the things that you change or keep the same in your experiment. If you change more than one thing, how do you know which change affected the results? If you change just one thing, than the results will be attributed to this one change.
Well the other day my variables got out of control, those damn chickens got everywhere, had to spray paint em.
What is a responding variable,operational definition,manipulated variable,controlled variable and variable?
I need it for schoolWhat is a responding variable,operational definition,manipulated variable,controlled variable and variable?
Manipulated variable- is the thing that will be changed.
Controlled variable- is the thing in the experiment that will not be changed. like water on plants. its what you compare your results to.
Operational definition- experimental procedure for changing the variable to a measurement or numeric value.
I think the responding is how you measure your change.
Hope this helped!!
Manipulated variable- is the thing that will be changed.
Controlled variable- is the thing in the experiment that will not be changed. like water on plants. its what you compare your results to.
Operational definition- experimental procedure for changing the variable to a measurement or numeric value.
I think the responding is how you measure your change.
Hope this helped!!
Can you tell me the control,independent variable, and dependent variable for this experiment?
In this lab you will observe the activity of hydrogen peroxidase from potatoes and determine the speed
(rate) of reaction catalyzed by this enzyme.
Materials (per group)
10 50-mL plastic cups Sharpie Marker potato solution
3 50- or 100-mL Graduated cylinders labeling tape distilled water (15掳C)
1% hydrogen peroxide (H2O2) forceps 10 filter-paper disks
Procedure
1. Obtain five 50-mL small plastic cups and label them as follows: #1, 100% enzyme; #2, 75%
enzyme; #3, 50% enzyme; #4, 25% enzyme, #5, 0% enzyme. You can write directly on the cups
with the Sharpies.
2. Obtain three graduated cylinders and label them with labeling tape and a marker as follows: #1,
enzyme; #2, distilled H2O; #3, 1% H2O2. Set aside graduated cylinder #3 for use later. Only use
the graduated cylinders for the appropriate liquid鈥攁void cross contamination at all costs!
Y
2H2O2 Hydrogen Peroxidase 2H2O + O2
Substrate Enzyme Product(s)
3. Using the labeled graduated cylinders for the appropriate solutions, obtain potato solution and
distilled water. Prepare five solutions containing different concentrations of enzyme in the five
numbered beakers or cups according to the following mixtures:
Beaker # Enzyme (potato solution) Distilled H2O (15掳C)
1 (100%) 40 mL 0 mL
2 (75%) 30 mL 10 mL
3 (50%) 20 mL 20 mL
4 (25%) 10 mL 30 mL
5 (0%) 0 mL 40 mL
4. Obtain five more 50-mL cups and label them A, B, C, D, and E. Using the graduated cylinder
labeled 1% H2O2, add 40 mL of hydrogen peroxide (the substrate) to each beaker. The reactions
are now ready to run.
5. Using the forceps, obtain ten filter-paper disks. Set them on a dry paper towel.
6. Using the forceps, take one filter-paper disk and immerse it in beaker #1. Allow the disk to
absorb the enzyme solution for 5 seconds. Remove the disk and drain it for 10 seconds on a
paper towel. Drop the disk into beaker A. Observe the disk鈥檚 movement, and note the time
when the disk reaches the surface. Record the time in the Data Table. Convert the time from
seconds into minutes. Also record this in the Data Table.
7. Repeat step 6 for a second trial. Record your results in the Data Table.
8. Repeat the procedure in step 6 using beaker #2 and beaker B. Also run two trials.
9. Repeat steps 6 and 7 using beaker #3 and beaker C. Run two trials.
10. Repeat steps 6 and 7 using beaker #4 and beaker D. Run two trials.
11. Repeat steps 6 and 7 using beaker #5 and beaker E. Run two trials.
12. Calculate the reaction rate, or speed of the reactions. Divide the concentration of the enzyme
(remember to convert from percentage to decimal) by the time it took the disk to reach the
surface.Can you tell me the control,independent variable, and dependent variable for this experiment?
thedependent variable is the rate of reaction becase the it is affected by the different enzymes (the independent variable) i think so anyway didn't read most if the stuff you put up thereCan you tell me the control,independent variable, and dependent variable for this experiment?
the control is the substance that you did not add or do anything to
(rate) of reaction catalyzed by this enzyme.
Materials (per group)
10 50-mL plastic cups Sharpie Marker potato solution
3 50- or 100-mL Graduated cylinders labeling tape distilled water (15掳C)
1% hydrogen peroxide (H2O2) forceps 10 filter-paper disks
Procedure
1. Obtain five 50-mL small plastic cups and label them as follows: #1, 100% enzyme; #2, 75%
enzyme; #3, 50% enzyme; #4, 25% enzyme, #5, 0% enzyme. You can write directly on the cups
with the Sharpies.
2. Obtain three graduated cylinders and label them with labeling tape and a marker as follows: #1,
enzyme; #2, distilled H2O; #3, 1% H2O2. Set aside graduated cylinder #3 for use later. Only use
the graduated cylinders for the appropriate liquid鈥攁void cross contamination at all costs!
Y
2H2O2 Hydrogen Peroxidase 2H2O + O2
Substrate Enzyme Product(s)
3. Using the labeled graduated cylinders for the appropriate solutions, obtain potato solution and
distilled water. Prepare five solutions containing different concentrations of enzyme in the five
numbered beakers or cups according to the following mixtures:
Beaker # Enzyme (potato solution) Distilled H2O (15掳C)
1 (100%) 40 mL 0 mL
2 (75%) 30 mL 10 mL
3 (50%) 20 mL 20 mL
4 (25%) 10 mL 30 mL
5 (0%) 0 mL 40 mL
4. Obtain five more 50-mL cups and label them A, B, C, D, and E. Using the graduated cylinder
labeled 1% H2O2, add 40 mL of hydrogen peroxide (the substrate) to each beaker. The reactions
are now ready to run.
5. Using the forceps, obtain ten filter-paper disks. Set them on a dry paper towel.
6. Using the forceps, take one filter-paper disk and immerse it in beaker #1. Allow the disk to
absorb the enzyme solution for 5 seconds. Remove the disk and drain it for 10 seconds on a
paper towel. Drop the disk into beaker A. Observe the disk鈥檚 movement, and note the time
when the disk reaches the surface. Record the time in the Data Table. Convert the time from
seconds into minutes. Also record this in the Data Table.
7. Repeat step 6 for a second trial. Record your results in the Data Table.
8. Repeat the procedure in step 6 using beaker #2 and beaker B. Also run two trials.
9. Repeat steps 6 and 7 using beaker #3 and beaker C. Run two trials.
10. Repeat steps 6 and 7 using beaker #4 and beaker D. Run two trials.
11. Repeat steps 6 and 7 using beaker #5 and beaker E. Run two trials.
12. Calculate the reaction rate, or speed of the reactions. Divide the concentration of the enzyme
(remember to convert from percentage to decimal) by the time it took the disk to reach the
surface.Can you tell me the control,independent variable, and dependent variable for this experiment?
thedependent variable is the rate of reaction becase the it is affected by the different enzymes (the independent variable) i think so anyway didn't read most if the stuff you put up thereCan you tell me the control,independent variable, and dependent variable for this experiment?
the control is the substance that you did not add or do anything to
What do they mean by ';Does this procedure control for variables';?
What does that mean? Control for variables?What do they mean by ';Does this procedure control for variables';?
Can you give a little more explanation about ';this procedure';. Thank you.
Can you give a little more explanation about ';this procedure';. Thank you.
The control and variable in my science project? please help! My experiment is on, Do roots always grow down?
please help i need to know what the control and variable are. im confused and its due monday. PLEASE PLEASE help. and for my starting on explaining my experiment, this is what i have so far tell me what you think. please and thankyou.
In our expermiment on geotropism my partner and I will need 4 lima beans from a seed packet, super glue, a sponge,zipper plastic bag, scissors, a turkey baster, a thumbtack, water, and lastly, a permanent marker. For our hypothisis, my partner and I, will use permenent marker to label the bag as if a clock, 3,6,9, and 12. Next, we cut several tiny slits in the sipper bag using the scissors. Then, we will moisten the sponge, in which we sucured four beans to with each hilium facing correctly, into the zipper bag, afterwards, zip the bag. Following that use the tack to sucure the bag to the wall. Next, make a daily observationfor a continuos five days using the chart that was provided. Finally, water the seeds daily, using the baster to drop water through the small slits in the bag onto the sponge. The control of this is experiment is the effect of geotropism, in other words, a tropism (as of plant roots) in which gravity is the orienting factor and in the word geotropism i a ';tropism'; is a plant movement triggered by stimuli. The term ';geotropic'; refers to a plant whose roots grow down into the soil as a response to gravity. Plants commonly exist in a state of ';anisotropic growth,'; where roots grow downward and shoots grow upward. Anisotropic growth will continue even as a plant is turned sideways or upside down. In other words, no matter what you do to a plant within Earth's atmosphere, it will still grow roots down, stem up. The reason for this comes from the nature of a plant, and it's general response to gravity.Plant growth related to gravity, and plant growth or movement in response to gravity. Upward growth of plant parts, against gravity, is called negative geotropism, and downward growth of roots, positive geotropism. This is some information on our science project.
PLEASE help i dont understand.The control and variable in my science project? please help! My experiment is on, Do roots always grow down?
The seed you orient with the root already pointing 鈥榙own鈥?is your control seed to compare the other seed's growth to. It is aligned with gravity so should grow with no change in direction. All the other seeds have their root tip pointing away from this position. If all the seeds begin to grow out then turn to grow as the control seed they are responding to the directional alignment gravity is providing. You can measure how much they have to bend to do this.
The independent variable is the scar position; the dependent variable is the amount of bend to align with gravity the other roots have to go through.
The root emerges either pointing away from the seed coat scar or pointing the same way as the scar depending on the seed you are using. You need to know what your seed does! What is the correct position? Is the seed scar facing out of the clock or inwards to the center.
Define your words like hilium. The radicle and micropyle are other terms you can look up and use.
Here are labeled pictures to help.
http://www.wastatelaser.org/_support/too鈥?/a>
http://www.mbgnet.net/bioplants/grow.htm鈥?/a>
I reworded your paragraphs a bit......
The purpose of this is experiment is to look at the effect of geotropism on plant growth. Hypothesis is that roots will respond to gravity even if the original orientation of the seed scar is misaligned in respect to the earth鈥檚 center. In other words the seeds roots will emerge and turn down from any position in the soil, if their other needs for germination %26amp; growth are met, they do not have to be correctly aligned. We will test this by pre-positioning the seed scars in a range of orientations with respect to gravity and see if all respond similarly, by growing roots down, despite the seed scar orientation. They will be compared to the control seed placed in alignment with gravity that should show no root bending.
This is some background information on our science project.: A tropism for a plant is a non-reversible, directional response to external stimuli. Geotropism is where gravity is the orienting factor. The term ';geotropic'; refers to a plant whose roots grow down into the soil as a response to gravity. Plants commonly exist in a state of ';anisotropic growth,'; where roots grow downward and shoots grow upward. Anisotropic growth will continue even as a plant is turned sideways or upside down. In other words, no matter what you do to a plant within Earth's atmosphere, it will still grow roots down, stem up. The reason for this comes from the nature of a plant, and it's general response to gravity. Plant growth related to gravity, and plant growth or movement in response to gravity. Upward growth of plant parts, against gravity, is called negative geotropism, and downward growth of roots, positive geotropism.
[Whether this is a quote or reference you have taken you need to site your source of information.]
Methods %26amp; materials section:
In our expermiment on geotropism my partner and I will need 4 lima beans from a seed packet, super glue, a sponge,zipper plastic bag, scissors, a turkey baster, a thumbtack, water, and lastly, a permanent marker.
My partner and I, will use permanent marker to label the bag as if a clock, 3,6,9, and 12. Next, we cut several tiny slits in the sipper bag using the scissors. Then, we will moisten the sponge, in which we secured four beans to with each hilium facing correctly, into the zipper bag, afterward, zip the bag. Following that use the tack to secure the bag to the wall. Next, make a daily observation for a continuous five days using the chart that was provided. Finally, water the seeds daily, using the baster to drop water through the small slits in the bag onto the sponge.
I corrected some of your spelling as well as editing the content of your work so you need to read over what you have and put it back into your own words, if you use any of this.The control and variable in my science project? please help! My experiment is on, Do roots always grow down?
well...i am not able to understand what is the aim of your experiment or is it studying geotropism?
well...in my class, we have started with plant hormones, and have just covered auxins..have not even started with cytokinins..but from what all i've covered,..guess i can say that you do one thing..you cut the plumule to varing degree or make some incision etc. and then see the effect of gravity on the roots. roots come because of the action of auxins and auxin shows polarity and moves downwards because of the action of gravity...
hope this thing helps you somewhere.
and yes, roots always grow downwards.
I think Sam is right. You want to have two treatments: 1) bean face up and 2) bean face down. These two treatments (bean position) will be your variables. Everything else will be controlled. Set these up exactly the same, following your directions but change which way the bean faces (see link to see where the bean hypocotyl (young stem) and radicle (young root) will emerge. They will emerge from a similar place on the bean). To test your hypothesis that the root will always grow down and the stem will always grow up, you will record the measurements on your sheet. If, in both treatments, the root grows down and the stem grows up, you will have some evidence that supports your hypothesis. If in your ';seed faced down'; treatment you have both the stem and root grow down, OR in your ';seed faced up'; treatment you see both the stem and root grow up you have evidence to reject your hypothesis.
Hope that helps and good luck!
Based on your description, it is hard to tell what you are changing and what you are not, which is how you determine ';controls'; (that which is the same in every situation) and ';variables'; (the one thing that you do change).
Since you are using only lima beans, you are controlling the type of seed. You are also going to water them the same amount and at the same time, so the water amount and schedule is under control. I assume they will all be in the same location for sunlight exposure, right? Anything that is the same for all of your seeds is a ';control.';
Now, what are you varying? Generally, with geotropism experiments, you turn the seeds at various points during the growth period to see if the roots will re-orient themselves and seek the ';downward'; direction. Based on your description of marking the bag like a clock face and your comment that each hilium will be ';facing correctly,'; I'm guessing that the variable will be the starting position for the seeds. That would give you a clear difference in the set-up of your four seeds and, therefore, your variable. You are varying the position in which the seed is planted.
You are trying to determine that, no matter what position a seed is in when first planted, it will always grow with roots down and sprout upward. Correct?
In our expermiment on geotropism my partner and I will need 4 lima beans from a seed packet, super glue, a sponge,zipper plastic bag, scissors, a turkey baster, a thumbtack, water, and lastly, a permanent marker. For our hypothisis, my partner and I, will use permenent marker to label the bag as if a clock, 3,6,9, and 12. Next, we cut several tiny slits in the sipper bag using the scissors. Then, we will moisten the sponge, in which we sucured four beans to with each hilium facing correctly, into the zipper bag, afterwards, zip the bag. Following that use the tack to sucure the bag to the wall. Next, make a daily observationfor a continuos five days using the chart that was provided. Finally, water the seeds daily, using the baster to drop water through the small slits in the bag onto the sponge. The control of this is experiment is the effect of geotropism, in other words, a tropism (as of plant roots) in which gravity is the orienting factor and in the word geotropism i a ';tropism'; is a plant movement triggered by stimuli. The term ';geotropic'; refers to a plant whose roots grow down into the soil as a response to gravity. Plants commonly exist in a state of ';anisotropic growth,'; where roots grow downward and shoots grow upward. Anisotropic growth will continue even as a plant is turned sideways or upside down. In other words, no matter what you do to a plant within Earth's atmosphere, it will still grow roots down, stem up. The reason for this comes from the nature of a plant, and it's general response to gravity.Plant growth related to gravity, and plant growth or movement in response to gravity. Upward growth of plant parts, against gravity, is called negative geotropism, and downward growth of roots, positive geotropism. This is some information on our science project.
PLEASE help i dont understand.The control and variable in my science project? please help! My experiment is on, Do roots always grow down?
The seed you orient with the root already pointing 鈥榙own鈥?is your control seed to compare the other seed's growth to. It is aligned with gravity so should grow with no change in direction. All the other seeds have their root tip pointing away from this position. If all the seeds begin to grow out then turn to grow as the control seed they are responding to the directional alignment gravity is providing. You can measure how much they have to bend to do this.
The independent variable is the scar position; the dependent variable is the amount of bend to align with gravity the other roots have to go through.
The root emerges either pointing away from the seed coat scar or pointing the same way as the scar depending on the seed you are using. You need to know what your seed does! What is the correct position? Is the seed scar facing out of the clock or inwards to the center.
Define your words like hilium. The radicle and micropyle are other terms you can look up and use.
Here are labeled pictures to help.
http://www.wastatelaser.org/_support/too鈥?/a>
http://www.mbgnet.net/bioplants/grow.htm鈥?/a>
I reworded your paragraphs a bit......
The purpose of this is experiment is to look at the effect of geotropism on plant growth. Hypothesis is that roots will respond to gravity even if the original orientation of the seed scar is misaligned in respect to the earth鈥檚 center. In other words the seeds roots will emerge and turn down from any position in the soil, if their other needs for germination %26amp; growth are met, they do not have to be correctly aligned. We will test this by pre-positioning the seed scars in a range of orientations with respect to gravity and see if all respond similarly, by growing roots down, despite the seed scar orientation. They will be compared to the control seed placed in alignment with gravity that should show no root bending.
This is some background information on our science project.: A tropism for a plant is a non-reversible, directional response to external stimuli. Geotropism is where gravity is the orienting factor. The term ';geotropic'; refers to a plant whose roots grow down into the soil as a response to gravity. Plants commonly exist in a state of ';anisotropic growth,'; where roots grow downward and shoots grow upward. Anisotropic growth will continue even as a plant is turned sideways or upside down. In other words, no matter what you do to a plant within Earth's atmosphere, it will still grow roots down, stem up. The reason for this comes from the nature of a plant, and it's general response to gravity. Plant growth related to gravity, and plant growth or movement in response to gravity. Upward growth of plant parts, against gravity, is called negative geotropism, and downward growth of roots, positive geotropism.
[Whether this is a quote or reference you have taken you need to site your source of information.]
Methods %26amp; materials section:
In our expermiment on geotropism my partner and I will need 4 lima beans from a seed packet, super glue, a sponge,zipper plastic bag, scissors, a turkey baster, a thumbtack, water, and lastly, a permanent marker.
My partner and I, will use permanent marker to label the bag as if a clock, 3,6,9, and 12. Next, we cut several tiny slits in the sipper bag using the scissors. Then, we will moisten the sponge, in which we secured four beans to with each hilium facing correctly, into the zipper bag, afterward, zip the bag. Following that use the tack to secure the bag to the wall. Next, make a daily observation for a continuous five days using the chart that was provided. Finally, water the seeds daily, using the baster to drop water through the small slits in the bag onto the sponge.
I corrected some of your spelling as well as editing the content of your work so you need to read over what you have and put it back into your own words, if you use any of this.The control and variable in my science project? please help! My experiment is on, Do roots always grow down?
well...i am not able to understand what is the aim of your experiment or is it studying geotropism?
well...in my class, we have started with plant hormones, and have just covered auxins..have not even started with cytokinins..but from what all i've covered,..guess i can say that you do one thing..you cut the plumule to varing degree or make some incision etc. and then see the effect of gravity on the roots. roots come because of the action of auxins and auxin shows polarity and moves downwards because of the action of gravity...
hope this thing helps you somewhere.
and yes, roots always grow downwards.
I think Sam is right. You want to have two treatments: 1) bean face up and 2) bean face down. These two treatments (bean position) will be your variables. Everything else will be controlled. Set these up exactly the same, following your directions but change which way the bean faces (see link to see where the bean hypocotyl (young stem) and radicle (young root) will emerge. They will emerge from a similar place on the bean). To test your hypothesis that the root will always grow down and the stem will always grow up, you will record the measurements on your sheet. If, in both treatments, the root grows down and the stem grows up, you will have some evidence that supports your hypothesis. If in your ';seed faced down'; treatment you have both the stem and root grow down, OR in your ';seed faced up'; treatment you see both the stem and root grow up you have evidence to reject your hypothesis.
Hope that helps and good luck!
Based on your description, it is hard to tell what you are changing and what you are not, which is how you determine ';controls'; (that which is the same in every situation) and ';variables'; (the one thing that you do change).
Since you are using only lima beans, you are controlling the type of seed. You are also going to water them the same amount and at the same time, so the water amount and schedule is under control. I assume they will all be in the same location for sunlight exposure, right? Anything that is the same for all of your seeds is a ';control.';
Now, what are you varying? Generally, with geotropism experiments, you turn the seeds at various points during the growth period to see if the roots will re-orient themselves and seek the ';downward'; direction. Based on your description of marking the bag like a clock face and your comment that each hilium will be ';facing correctly,'; I'm guessing that the variable will be the starting position for the seeds. That would give you a clear difference in the set-up of your four seeds and, therefore, your variable. You are varying the position in which the seed is planted.
You are trying to determine that, no matter what position a seed is in when first planted, it will always grow with roots down and sprout upward. Correct?
What is the independent and dependent variable for my project, also the control group?
i'm doing a science project...... which flavor of haagen daz ice-cream melts the fastest, vanilla, chocolate, or strawberry?
independent variable=
dependent variable=
control group=What is the independent and dependent variable for my project, also the control group?
independent variable = temperature of room or air.
dependent variable = ice cream brand.
control group = get a diffrent brand.What is the independent and dependent variable for my project, also the control group?
You're trying to measure melting times, so the dependent variable is melting time. That's because melting time *depends* upon the flavor of the ice cream.
Next, the independent variable is the flavor of ice cream. This is because the flavor of ice cream doesn't *depend* on anything as it's just chosen to be observed.
Finally the control group isn't obvious. You need to pick one of the flavors to use as a control. I'd suggest using vanilla because it's usually considered a ';plain'; flavor.
For your science project, I'd recommend taking several different samples of your ice cream.
I'd do 10 samples of 1 ounce of each flavor. This would be a total of 30 samples. Then record how long it takes for each 1 ounce sample of each flavor to melt.
Then I'd do 10 samples of 2 ounces of each flavor. This is another total of 30 samples.
This adds up to a somewhat large quantity of ice cream, but you can compare and contrast the different flavors. You can write about whether a 2 ounce sample melts faster than a 1 ounce sample or at the same rate.
You should try to predict what will happen before hand.
Also, try to keep the shape of the samples the same. Differing amounts of surface area will cause the ice cream to melt at different rates. You may want to write about this as well.
independent variables- type of ice cream, because it's different for each, but you control it
dependent variable- amount melted, because you have no direct control over it.
control- time to melt, because you control it and it stays the same for all of them, controling it.
independent variable = type of ice cream
dependent variable = time to melt
control group = ground ice?
independent: Flavor of ice cream
dependent: Melting time
There would be no control group
independent=temperature, flavor
dependent=how much it melts in the given time
control=idkbeauty
independent variable=
dependent variable=
control group=What is the independent and dependent variable for my project, also the control group?
independent variable = temperature of room or air.
dependent variable = ice cream brand.
control group = get a diffrent brand.What is the independent and dependent variable for my project, also the control group?
You're trying to measure melting times, so the dependent variable is melting time. That's because melting time *depends* upon the flavor of the ice cream.
Next, the independent variable is the flavor of ice cream. This is because the flavor of ice cream doesn't *depend* on anything as it's just chosen to be observed.
Finally the control group isn't obvious. You need to pick one of the flavors to use as a control. I'd suggest using vanilla because it's usually considered a ';plain'; flavor.
For your science project, I'd recommend taking several different samples of your ice cream.
I'd do 10 samples of 1 ounce of each flavor. This would be a total of 30 samples. Then record how long it takes for each 1 ounce sample of each flavor to melt.
Then I'd do 10 samples of 2 ounces of each flavor. This is another total of 30 samples.
This adds up to a somewhat large quantity of ice cream, but you can compare and contrast the different flavors. You can write about whether a 2 ounce sample melts faster than a 1 ounce sample or at the same rate.
You should try to predict what will happen before hand.
Also, try to keep the shape of the samples the same. Differing amounts of surface area will cause the ice cream to melt at different rates. You may want to write about this as well.
independent variables- type of ice cream, because it's different for each, but you control it
dependent variable- amount melted, because you have no direct control over it.
control- time to melt, because you control it and it stays the same for all of them, controling it.
independent variable = type of ice cream
dependent variable = time to melt
control group = ground ice?
independent: Flavor of ice cream
dependent: Melting time
There would be no control group
independent=temperature, flavor
dependent=how much it melts in the given time
control=idk
What would be the materials, procedures, dependent, independent variables, control and constants in...?
Which Metal Conducts Heat? I'm really stuck. Pleas explain why are the variables constants and control are the way they are.What would be the materials, procedures, dependent, independent variables, control and constants in...?
Hmmm....
The materials would be a few different types of metal (like lead or steel), a thermometer or other form of temperature gage, and a candle flame.
The independent variable would be the temperature you expose the metal to; since you have control of this (independent- you control, dependent- the result).
The dependent variable would be the temperature of the metal after exposure to the independent variable (heat)
Your procedure would run something like this: you take your metal and measure the base temperature (the metal at room temperature). Then you hold one piece of metal at a time in the candle flame for a short period of time (say, thirty seconds; it doesn't matter so long as each time is the same). You would then immediately measure the temperature of each piece as soon as you remove it from the flame. The piece that heats up the most is the one which conducts heat the best.
Your controls would have to be things like the base room temperature has to be the same for every metal, you have to use the same quantity of each metal, and the flame has to be approximately the same size and heat for every time. Controls like these are put in place to ensure that you get reliable results. If you used one piece of metal that is larger than another, then that piece would not heat up as quickly and you have no way of knowing how the two really compare.
The constants are going to be metal quantity and flame temperature, as neither of these should change.
Does this help?
Hmmm....
The materials would be a few different types of metal (like lead or steel), a thermometer or other form of temperature gage, and a candle flame.
The independent variable would be the temperature you expose the metal to; since you have control of this (independent- you control, dependent- the result).
The dependent variable would be the temperature of the metal after exposure to the independent variable (heat)
Your procedure would run something like this: you take your metal and measure the base temperature (the metal at room temperature). Then you hold one piece of metal at a time in the candle flame for a short period of time (say, thirty seconds; it doesn't matter so long as each time is the same). You would then immediately measure the temperature of each piece as soon as you remove it from the flame. The piece that heats up the most is the one which conducts heat the best.
Your controls would have to be things like the base room temperature has to be the same for every metal, you have to use the same quantity of each metal, and the flame has to be approximately the same size and heat for every time. Controls like these are put in place to ensure that you get reliable results. If you used one piece of metal that is larger than another, then that piece would not heat up as quickly and you have no way of knowing how the two really compare.
The constants are going to be metal quantity and flame temperature, as neither of these should change.
Does this help?
What is the manipulated, controlled, and responding variable?
i need to find out what the manipulated, controlled, and and responding variable isWhat is the manipulated, controlled, and responding variable?
* Controlled remains fixed.
* Manipulated is what you changed and recorded.
* Responding is the resulting effect which you also record.
For example:
* Control group is the one that will receive the placebo, or will not be changed at all.
* Manipulated is the group that is given the medicine being tested, or changing the ';weight'; of the object from 5 to 10 to test the result, or changing the ';time'; plants are exposed to light from 8 hours to 24 hours, etc.
* Responding is the factor that changes ';in response'; to what you manipulated. So if you gave medicine (manipulated) to apnea patients, the ';amount'; or ';quality of sleep'; that changed (responding). [the ';control'; group would either receive no medicine or might receive a placebo.]
Or if you exposed a plant to different ';hours of light'; (manipulated) then the ';height'; of the plant (responding) might show the difference in effect, etc. [the ';control'; group would receive 8 hours of light instead of 24]What is the manipulated, controlled, and responding variable?
Your controlled is the thing you don't change for however many experiments you are doing. Your manipulated is the thing changed in each of the experiments, such as amount of water for plants. Your responding variable is what changed because you (referring back to the water example) only gave minimal water to one plant and it didn't grow while you gave a lot of water to the second plant and it grew a lot. So in this example, your responding would be the growth.
* Controlled remains fixed.
* Manipulated is what you changed and recorded.
* Responding is the resulting effect which you also record.
For example:
* Control group is the one that will receive the placebo, or will not be changed at all.
* Manipulated is the group that is given the medicine being tested, or changing the ';weight'; of the object from 5 to 10 to test the result, or changing the ';time'; plants are exposed to light from 8 hours to 24 hours, etc.
* Responding is the factor that changes ';in response'; to what you manipulated. So if you gave medicine (manipulated) to apnea patients, the ';amount'; or ';quality of sleep'; that changed (responding). [the ';control'; group would either receive no medicine or might receive a placebo.]
Or if you exposed a plant to different ';hours of light'; (manipulated) then the ';height'; of the plant (responding) might show the difference in effect, etc. [the ';control'; group would receive 8 hours of light instead of 24]What is the manipulated, controlled, and responding variable?
Your controlled is the thing you don't change for however many experiments you are doing. Your manipulated is the thing changed in each of the experiments, such as amount of water for plants. Your responding variable is what changed because you (referring back to the water example) only gave minimal water to one plant and it didn't grow while you gave a lot of water to the second plant and it grew a lot. So in this example, your responding would be the growth.
How do I control each different variables in my physics report on a toy car hitting the wall?
this will examine momentum and impulse and uses an electronic data logo that examines the position of the car over time.
what will these variables be btw? and how do i control them?How do I control each different variables in my physics report on a toy car hitting the wall?
First decide what are the variables. I can think of 3 including the deformation of the car. Please don't expect me to do your homework for you only to get you to think about it.
Then decide how to measure them before or during or after the impact.
The magnitude of each variable is something you should be able to control by making adjustments to the active parts of the dynamic system. This might include using variable gears or weights or pieces of rubber.How do I control each different variables in my physics report on a toy car hitting the wall?
The speed and weight of the car might be variables and to control them it would depend how you control the car. And the wall you use would have to be the same wall each time.
what will these variables be btw? and how do i control them?How do I control each different variables in my physics report on a toy car hitting the wall?
First decide what are the variables. I can think of 3 including the deformation of the car. Please don't expect me to do your homework for you only to get you to think about it.
Then decide how to measure them before or during or after the impact.
The magnitude of each variable is something you should be able to control by making adjustments to the active parts of the dynamic system. This might include using variable gears or weights or pieces of rubber.How do I control each different variables in my physics report on a toy car hitting the wall?
The speed and weight of the car might be variables and to control them it would depend how you control the car. And the wall you use would have to be the same wall each time.
What is the controlled variable?
I am doing a science experiment and for my report i need a controlled variable, what is it?What is the controlled variable?
The controlled variable is the one you control. In Boyle's law the temperature is the one you control and the volume of the gas is the dependant variable, ie the one you measure.
Controlled is controlled. As in Charles lay, pressure is controlled and volume is dependant.What is the controlled variable?
A controlled variable is the variable that you cannot change throughout the experiment. They are the variables that are kept constant to prevent their influence on the effect of the independent variable on the dependent. Every experiment has a controlling variable, and it is necessary to not change it, or the results of the experiment won't be valid.
The controlled variable is the one you control. In Boyle's law the temperature is the one you control and the volume of the gas is the dependant variable, ie the one you measure.
Controlled is controlled. As in Charles lay, pressure is controlled and volume is dependant.What is the controlled variable?
A controlled variable is the variable that you cannot change throughout the experiment. They are the variables that are kept constant to prevent their influence on the effect of the independent variable on the dependent. Every experiment has a controlling variable, and it is necessary to not change it, or the results of the experiment won't be valid.
What is important to control variables in experiment ?
the more things that are held constant the few variables there are to influence your results; the ';IDEAL'; experiment has only ONE variable!
In a scientific method, what is the difference between a controlled variable and a dependant variable?
When you are in the lab, the controlled variable is the one that you can always change by will, in a direct way. The dependent variables are those that change when you change a controlled variable. For example, if you are measuring how much a spring stretches when you pull it, the controlled variable would be the force you apply to the spring, and the dependent variable is how much the spring stretches, i.e. the change in its size.beauty
Is ';same rose bushes'; dependent, independent, or controlled variable?
Please define what the variables are.Is ';same rose bushes'; dependent, independent, or controlled variable?
You are manipulating the independent variable.
You measure the dependent variable.
The control variable is one that is kept constant.
It depends on the experiment (re: rose bush).
But, in general, if you hypothesize that the rate of growth of a rose bush will be slower in colder temperatures then you would measure the rate of growth of a rose bush in different temperatures and the rose bush is constant (control), the rate of growth is the dependent variable, and the manipulated variable, the independent variable, is the temperature.
Is ';same rose bushes'; dependent, independent, or controlled variable?
the controlled variable is the one that you keep the same in an experiment(the one you compare to your experiment)
independent variable is something you, the person doing the experiment)can change the dependent variable is basically a variable that changes when you're independent variable changes
hope that helped
You are manipulating the independent variable.
You measure the dependent variable.
The control variable is one that is kept constant.
It depends on the experiment (re: rose bush).
But, in general, if you hypothesize that the rate of growth of a rose bush will be slower in colder temperatures then you would measure the rate of growth of a rose bush in different temperatures and the rose bush is constant (control), the rate of growth is the dependent variable, and the manipulated variable, the independent variable, is the temperature.
Is ';same rose bushes'; dependent, independent, or controlled variable?
the controlled variable is the one that you keep the same in an experiment(the one you compare to your experiment)
independent variable is something you, the person doing the experiment)can change the dependent variable is basically a variable that changes when you're independent variable changes
hope that helped
What type of variable resistors can be used to control a 12v high amp battery
You need low ohms and high watts. How many ohms is ';low';? How many watts is ';high';? I don't know. How many amps is a ';high amp battery';? How many amps do you want in the load? How many amps will the load take if you don't put a resistor in?
Here is a link to some low ohm, high watt resistors.
http://www.postglover.com/resistortypes.鈥?/a>What type of variable resistors can be used to control a 12v high amp battery
The answer depends on the amount of current to be drawn from the battery through the resistor(s). If you want a small amount of current (say 10 milliamperes or less), you can use an ordinary potentiometer with 1 kOhm resistance, with 1/4 Watt power rating or more.
Higher current will be lower resistance and higher power (the power increases proportionally to the current (P = I * E, power = current times voltage). There are variable resistors (called rheostats, in most cases) with very high current and power ratings.
You'll have to watch for the heat generated as the resistance goes down! It will be easy to get burned, literally.What type of variable resistors can be used to control a 12v high amp battery
need a lot more details.
But in general, it doesn't work. The resistors have to be very high power, hundreds of watts, and you may need a different value for each application.
Much better to go with regulators, or switching regulators.
.
Here is a link to some low ohm, high watt resistors.
http://www.postglover.com/resistortypes.鈥?/a>What type of variable resistors can be used to control a 12v high amp battery
The answer depends on the amount of current to be drawn from the battery through the resistor(s). If you want a small amount of current (say 10 milliamperes or less), you can use an ordinary potentiometer with 1 kOhm resistance, with 1/4 Watt power rating or more.
Higher current will be lower resistance and higher power (the power increases proportionally to the current (P = I * E, power = current times voltage). There are variable resistors (called rheostats, in most cases) with very high current and power ratings.
You'll have to watch for the heat generated as the resistance goes down! It will be easy to get burned, literally.What type of variable resistors can be used to control a 12v high amp battery
need a lot more details.
But in general, it doesn't work. The resistors have to be very high power, hundreds of watts, and you may need a different value for each application.
Much better to go with regulators, or switching regulators.
.
What's the control, constant, and variables in my experiment?
I need to know the independent variable, dependent variable, control, and constant for my experiment where I put different brands of paper towels into a beaker and see which one absorbs the most water. Thank you for the help!!~~~What's the control, constant, and variables in my experiment?
The dependent variable is the ';result'; of the experiment. In other words how much water is absorbed for paper towel A.
Therefore, the independent variable is the paper towel being used to absorb the water.
If you plot the results ';paper towels'; would be on the x-axis and ';wt of water'; would be the y-axis.
The control would be an absorbing material againsty which you could judge the efficiecy of the paper towels you are testing. This could be sand (I guess all paper towels would do better), Kleenex tissues, etc\\
The constant would be something you need to keep control off (maintain at a constant level). That could be temperature of the water. Let's say that you didn't use water that was at 75F for all the tests. It could be argued that any differences you saw in watyer absorbancy was caused by the difference in water temperature. Probably not a serious problem but it illustrates the point.
Hope this helps
The dependent variable is the ';result'; of the experiment. In other words how much water is absorbed for paper towel A.
Therefore, the independent variable is the paper towel being used to absorb the water.
If you plot the results ';paper towels'; would be on the x-axis and ';wt of water'; would be the y-axis.
The control would be an absorbing material againsty which you could judge the efficiecy of the paper towels you are testing. This could be sand (I guess all paper towels would do better), Kleenex tissues, etc\\
The constant would be something you need to keep control off (maintain at a constant level). That could be temperature of the water. Let's say that you didn't use water that was at 75F for all the tests. It could be argued that any differences you saw in watyer absorbancy was caused by the difference in water temperature. Probably not a serious problem but it illustrates the point.
Hope this helps
What exactly are the independent dependent control and constant variables?
I have a story to find them %26amp;%26amp; its really confusingWhat exactly are the independent dependent control and constant variables?
In general,
Constants aren't variables at all... They stay the same no matter what, and don't ';vary';.
Control variables are controlled by you. They usually stay the same, but you can set them how you would like.
Independent variables change on their own, and dependent variables change based on others, typically on independent variables.What exactly are the independent dependent control and constant variables?
I assume you are talking about a science experiment in which the ';constant'; or ';controlled variables'; would be the things that don't change in the experiment, the ';dependent variable'; is the observable variable, or the thing impacted by the ';independent variable';.
* The independent variable answers the question ';What do I change?';.
* The dependent variables answer the question ';What do I observe?';.
* The controlled variables answer the question ';What do I keep the same?';.
In general,
Constants aren't variables at all... They stay the same no matter what, and don't ';vary';.
Control variables are controlled by you. They usually stay the same, but you can set them how you would like.
Independent variables change on their own, and dependent variables change based on others, typically on independent variables.What exactly are the independent dependent control and constant variables?
I assume you are talking about a science experiment in which the ';constant'; or ';controlled variables'; would be the things that don't change in the experiment, the ';dependent variable'; is the observable variable, or the thing impacted by the ';independent variable';.
* The independent variable answers the question ';What do I change?';.
* The dependent variables answer the question ';What do I observe?';.
* The controlled variables answer the question ';What do I keep the same?';.
Single phase supply used to control a three phase motor via a variable speed drive?
i've got a huge assignment,but i just can't seem to find any info on this. my lecturer gave me the question exactly like this:
';In VSds, explain how a single phase supply can be used to control a three phase motor.';
Im desperate!!Single phase supply used to control a three phase motor via a variable speed drive?
you can control a 3 phase motor via a single phase supply by using a ';phase converter'; but i think your instructor meant ';VFD's';
look here:
http://en.wikipedia.org/wiki/Three-phase鈥?/a>
The answer you are looking for is:
Variable-frequency drives (also known as solid-state inverters) are used to provide precise speed and torque control of three phase motors. Some models can be powered by a single phase supply. VFDs work by converting the supply voltage to DC and then converting the DC to a suitable three phase source for the motor.Single phase supply used to control a three phase motor via a variable speed drive?
Since a VSD works by converting the input voltage to dc before converting that dc to variable frequency/variable voltage, the input can be single phase or 3 phase and the same for the output.
This will not increase the voltage so the motor must match the input voltage or use a transformer.
Yes the load can be heavy for the single phase. A Japanese co builds a power supply that converts the single phase to DC. Then the DC is pulsed in 3 phases and u can increase the speed or slow it down.
small heat pumps/airconditioning units use this technology. the compressor motor windings are all equal resistance like a 3 phase motor but run on single phase. they use inverter boards that do the switching. try looking at a daikan or mitsubishi aircon website.
Hi
There is no problem is driving a 3 phase motor from a single phase supply as outlines above by other contributers. There is a total power problem however. The largest motor will be limited by the supplier drive type. Not all manufacturers have an identical range but most will cover up to 2.5 kw or so. Motors are normall made so that they can run on 220 or 400 VAC 3 phase...a simple case of connecting the motor winding up correctly. Good firms to contact are Control Techniques, SSD Parker, Invertek, Seimens, Hitachi, ABB and so on..
Good luck
';In VSds, explain how a single phase supply can be used to control a three phase motor.';
Im desperate!!Single phase supply used to control a three phase motor via a variable speed drive?
you can control a 3 phase motor via a single phase supply by using a ';phase converter'; but i think your instructor meant ';VFD's';
look here:
http://en.wikipedia.org/wiki/Three-phase鈥?/a>
The answer you are looking for is:
Variable-frequency drives (also known as solid-state inverters) are used to provide precise speed and torque control of three phase motors. Some models can be powered by a single phase supply. VFDs work by converting the supply voltage to DC and then converting the DC to a suitable three phase source for the motor.Single phase supply used to control a three phase motor via a variable speed drive?
Since a VSD works by converting the input voltage to dc before converting that dc to variable frequency/variable voltage, the input can be single phase or 3 phase and the same for the output.
This will not increase the voltage so the motor must match the input voltage or use a transformer.
Yes the load can be heavy for the single phase. A Japanese co builds a power supply that converts the single phase to DC. Then the DC is pulsed in 3 phases and u can increase the speed or slow it down.
small heat pumps/airconditioning units use this technology. the compressor motor windings are all equal resistance like a 3 phase motor but run on single phase. they use inverter boards that do the switching. try looking at a daikan or mitsubishi aircon website.
Hi
There is no problem is driving a 3 phase motor from a single phase supply as outlines above by other contributers. There is a total power problem however. The largest motor will be limited by the supplier drive type. Not all manufacturers have an identical range but most will cover up to 2.5 kw or so. Motors are normall made so that they can run on 220 or 400 VAC 3 phase...a simple case of connecting the motor winding up correctly. Good firms to contact are Control Techniques, SSD Parker, Invertek, Seimens, Hitachi, ABB and so on..
Good luck
What's the independent & dependent variable & control group?
Some metals rust when exposed to year-round conditions. The metals that do not rust usually contain chromium, an element that does not rust but increases the cost of the product. Your friend has a chemical that he claims will prevent rust on any metal. He claims that his chemical will reduce the cost of metal products by eliminating the need of adding chromium. Before he can sell his chemical concoction, you convince him to do some scientific testing to provide data for his sales pitch. Write a procedure for testing the chemical. (Remember, the marketability of the chemical depends on reliable date that supports the claim of inhibiting rust.)What's the independent %26amp; dependent variable %26amp; control group?
A somewhat lengthy experiment would involve simply letting pieces of steel rust outdoors. Take 1 piece of steel and treating it with his product, then put it in the same place as a piece of untreated steel and a piece of stainless (chromium-containing steel) and leave outside for either a predetermined amount of time or until significant corrosion is observed on the untreated steel. The untreated and stainless steels are the controls in the experiment, and all pieces should have the same surface area (use regularly-sized pieces such as sheets or blocks). The pieces can simply be visually inspected for signs of corrosion, but this may not be good enough to prove the effectiveness.
To do this more scientifically, the pieces should be weighed beforehand. After rusting, the pieces could be treated with sodium dithionite (often sold as ';super iron out';), a rust remover that does not attack iron, until all corrosion has been removed. The pieces could then be reweighed to determine what percentage of the mass was lost to corrosion. You may want to do more than one sample of each material for improved accuracy.
A faster way to do the experiment would be to expose the steels to corrosive conditions within the laboratory, but this would be less indicative of real-world performance.
To sum up the answers to your questions, the independent variable is type/treatment of steel, the dependent variable is the amount of corrosion, in this case, a mass percentage, and the two control samples are the untreated and stainless steel. These help you see if the product actually improves corrosion resistance, and also how it measures up to chromium.beauty
A somewhat lengthy experiment would involve simply letting pieces of steel rust outdoors. Take 1 piece of steel and treating it with his product, then put it in the same place as a piece of untreated steel and a piece of stainless (chromium-containing steel) and leave outside for either a predetermined amount of time or until significant corrosion is observed on the untreated steel. The untreated and stainless steels are the controls in the experiment, and all pieces should have the same surface area (use regularly-sized pieces such as sheets or blocks). The pieces can simply be visually inspected for signs of corrosion, but this may not be good enough to prove the effectiveness.
To do this more scientifically, the pieces should be weighed beforehand. After rusting, the pieces could be treated with sodium dithionite (often sold as ';super iron out';), a rust remover that does not attack iron, until all corrosion has been removed. The pieces could then be reweighed to determine what percentage of the mass was lost to corrosion. You may want to do more than one sample of each material for improved accuracy.
A faster way to do the experiment would be to expose the steels to corrosive conditions within the laboratory, but this would be less indicative of real-world performance.
To sum up the answers to your questions, the independent variable is type/treatment of steel, the dependent variable is the amount of corrosion, in this case, a mass percentage, and the two control samples are the untreated and stainless steel. These help you see if the product actually improves corrosion resistance, and also how it measures up to chromium.
What is the independent, dependent variable, control group and hypothesis?
Points to whoever answers it first and correctly
~
In the early 1660s the theory of ';spontaneous Generation'; prevailed. Spontaneous generation, means that people believed that living things came from non-living things. For example, many people noticed that around butcher shops there were often a lot of flies. So naturally, people thought that flies come from the meat. However, a scientist name Francesco Redi thought otherwise. He designed the experiment shown below. He placed meat in three different jars that were the same shape and size and left the jairs our on his balcony. One jar he covered with paper, allowing no air to get it, one jar he covered with gauze, which allowed air to get in, but kept other things out, and in another jar he left open. He noticed that the jar that he left open had flies in the jar and all over meat. The jar was paper had no flies in the jar or on the paper. The jar with the gauze had no flies in the jar, but maggots (baby flies) on the gauze.What is the independent, dependent variable, control group and hypothesis?
hypothesis - flies come from something other than meat (non-living things)
independent variable (the changes made by the researcher) - type of covering on the jars
dependent variable (what results from each change made by the researcher) - if flies appeared or not
control group (group with no change) - the jar with no covering
EDIT: The hypothesis was tested by not allowing anything INTO the jars containing the meat. Popular opinion was that the meat itself produced the flies (abiogenesis, or life from non-life). By trying different converings over the jars (and these were gauze and a lid, not paper) and leaving one open, he could determine if something had to enter the jar to cause maggots to be on the meat. If the popular opinion was correct, there should have been maggots in all the jars, because they all contained meat. But ONLY the jar that was open actually had the maggots on the meat. The one covered by gauze had maggots on the outside on the gauze (flies laid their eggs on the gauze, close to the meat), and the one with the lid had nothing (the flies weren't able to detect the meat in the closed jar). So by doing this, he was able to show that there had to be something besides just the meat that was causing the maggots and eventually flies.
And because he was testing to see if something OTHER THAN just the meat caused the maggots, he manipulated the other jars (his experimental units) by putting on different types of covers. Because the OPEN jar wasn't changed (was left open to the air, just like the meat in the butcher shops) this was the CONTROL. The answer has it wrong, whenever you make a change above what are the ';normal conditions'; (like covering a jar), then this can't be the control.
More about Redi's experiment with the hypothesis, variables, and control identified: http://biology.clc.uc.edu/courses/bio114鈥?/a>What is the independent, dependent variable, control group and hypothesis?
The control group is usually what is left untreated or unexposed to the procedure, in this case the air exposure. The control group: The jar with no air because it was covered with paper.
The hypothesis: First off what would key you in on the hypothesis of the experiment is Redi's opposition to spontaneous generation, that spontaneous generation is the incorrect ideology in regards to the origin of living things. Since he thought otherwise he believed that the flies did not come from the meat but rather from the exposure to air. Not necessarily that air would generate flies, but that being exposed to the air allows flies to get into contact with your meat and lay eggs (hence the partial air exposure left maggots). Since he thought that flies came from flies he did not believe in spontaneous generation.
Independent variable is the variable that is being manipulated or changed. That would be the independent variable is the type of exposure to air the meat is getting. The control has no air exposure, the other jar has partial air exposure (the gauze), and the final jar has total air exposure.
Dependent variable is the observed result from the independent variables. The dependent variable is the amount of flies/maggots in the jar.
~
In the early 1660s the theory of ';spontaneous Generation'; prevailed. Spontaneous generation, means that people believed that living things came from non-living things. For example, many people noticed that around butcher shops there were often a lot of flies. So naturally, people thought that flies come from the meat. However, a scientist name Francesco Redi thought otherwise. He designed the experiment shown below. He placed meat in three different jars that were the same shape and size and left the jairs our on his balcony. One jar he covered with paper, allowing no air to get it, one jar he covered with gauze, which allowed air to get in, but kept other things out, and in another jar he left open. He noticed that the jar that he left open had flies in the jar and all over meat. The jar was paper had no flies in the jar or on the paper. The jar with the gauze had no flies in the jar, but maggots (baby flies) on the gauze.What is the independent, dependent variable, control group and hypothesis?
hypothesis - flies come from something other than meat (non-living things)
independent variable (the changes made by the researcher) - type of covering on the jars
dependent variable (what results from each change made by the researcher) - if flies appeared or not
control group (group with no change) - the jar with no covering
EDIT: The hypothesis was tested by not allowing anything INTO the jars containing the meat. Popular opinion was that the meat itself produced the flies (abiogenesis, or life from non-life). By trying different converings over the jars (and these were gauze and a lid, not paper) and leaving one open, he could determine if something had to enter the jar to cause maggots to be on the meat. If the popular opinion was correct, there should have been maggots in all the jars, because they all contained meat. But ONLY the jar that was open actually had the maggots on the meat. The one covered by gauze had maggots on the outside on the gauze (flies laid their eggs on the gauze, close to the meat), and the one with the lid had nothing (the flies weren't able to detect the meat in the closed jar). So by doing this, he was able to show that there had to be something besides just the meat that was causing the maggots and eventually flies.
And because he was testing to see if something OTHER THAN just the meat caused the maggots, he manipulated the other jars (his experimental units) by putting on different types of covers. Because the OPEN jar wasn't changed (was left open to the air, just like the meat in the butcher shops) this was the CONTROL. The answer has it wrong, whenever you make a change above what are the ';normal conditions'; (like covering a jar), then this can't be the control.
More about Redi's experiment with the hypothesis, variables, and control identified: http://biology.clc.uc.edu/courses/bio114鈥?/a>What is the independent, dependent variable, control group and hypothesis?
The control group is usually what is left untreated or unexposed to the procedure, in this case the air exposure. The control group: The jar with no air because it was covered with paper.
The hypothesis: First off what would key you in on the hypothesis of the experiment is Redi's opposition to spontaneous generation, that spontaneous generation is the incorrect ideology in regards to the origin of living things. Since he thought otherwise he believed that the flies did not come from the meat but rather from the exposure to air. Not necessarily that air would generate flies, but that being exposed to the air allows flies to get into contact with your meat and lay eggs (hence the partial air exposure left maggots). Since he thought that flies came from flies he did not believe in spontaneous generation.
Independent variable is the variable that is being manipulated or changed. That would be the independent variable is the type of exposure to air the meat is getting. The control has no air exposure, the other jar has partial air exposure (the gauze), and the final jar has total air exposure.
Dependent variable is the observed result from the independent variables. The dependent variable is the amount of flies/maggots in the jar.
What is the resonding, controlled, and manipulative variable in this experiment?
I am buying 3 types of meat: turkey pork and beef and measuring the fat content by boiling and then cooling the meat. The 3 meats will cook in identical pots on identical heat for same amount of time and then cool for the same amount of time. Pork had most fat beef in the middle and turkey the least. Whta is the controlled, responding, and manipulative variable? ThanksWhat is the resonding, controlled, and manipulative variable in this experiment?
The answer is:the weight of the meat or meat is the manipulated,the water per product is the responding and the temp.and cooling times is the controlled.What is the resonding, controlled, and manipulative variable in this experiment?
What do you mean water per product?
The answer is:the weight of the meat or meat is the manipulated,the water per product is the responding and the temp.and cooling times is the controlled.What is the resonding, controlled, and manipulative variable in this experiment?
What do you mean water per product?
Report Abuse
What are the independent variable, dependent variable, control condition, experimental condition?
I'm doing hw for psychology and im kinda stuck. I need help distinguishing between independent and dependent variables.
An average-looking person is rated as less attractive after people have looked at pictures of attractive people.
What are the independent and dependent variables? What are the experimental and control conditions?
I know the independent is the one not effected by anything and the dependent is effected by the independent but I can figure which one is what in this problem.What are the independent variable, dependent variable, control condition, experimental condition?
The Dependent Variable is the ';Attractiveness Rating';
The Independent Variable is ';Viewing the Pictures of Attractive People'; or ';Not Viewing the Pictures of Attractive People';
The Control Conditions would be the rating without viewing the pictures, while the Experimental Condition would be those who viewed the pictures beforehand.
An average-looking person is rated as less attractive after people have looked at pictures of attractive people.
What are the independent and dependent variables? What are the experimental and control conditions?
I know the independent is the one not effected by anything and the dependent is effected by the independent but I can figure which one is what in this problem.What are the independent variable, dependent variable, control condition, experimental condition?
The Dependent Variable is the ';Attractiveness Rating';
The Independent Variable is ';Viewing the Pictures of Attractive People'; or ';Not Viewing the Pictures of Attractive People';
The Control Conditions would be the rating without viewing the pictures, while the Experimental Condition would be those who viewed the pictures beforehand.
Independent, dependent variable, and control? in science experiment?
so u plant seeds in fresh water and salt water. and after 3 days u see which grew grass. what is the independent, dependent varaible and control. and if u could please explain, i dont understand what they areIndependent, dependent variable, and control? in science experiment?
the dependent variable are the plant because they DEPEND on the water(the independent variable) to survive. the control is the plants because you didn't do anything to it. if you have any more questions, email me @ princesspea010@yahoo.com.Independent, dependent variable, and control? in science experiment?
The hypothesis is the question you are attempting to test.. in this case it might be ';grass grows just as well with salt water as with fresh';
growing grass with fresh water is considered 'normal' so that is the control group... the unchanged situation... the grass grown with salt water is called the treatement group
the independent variable is the thing you control, in this case whether the grass is treated with fresh or salt water... I would assume the dependent variable is the length of the grass after some given amount of time or possibly just whether or not grass grew at all... in any case the dependent variable is the thing that happens as a result of your control of the independent variable
If grass grows in both cases, you could measure several stalks of grass at various times and graph growth rates over time... seems to me that grass probably won't grow at all in salt water
The independent variable is the salt because that is what you're changing. The dependent variable is if the grass grew, because that is what you're measuring and it depends on the independent variable. The control is what you're comparing it too, so since you are adding salt to the water, you're comparing your results to fresh water, so your control would be the fresh water.
the dependent variable are the plant because they DEPEND on the water(the independent variable) to survive. the control is the plants because you didn't do anything to it. if you have any more questions, email me @ princesspea010@yahoo.com.Independent, dependent variable, and control? in science experiment?
The hypothesis is the question you are attempting to test.. in this case it might be ';grass grows just as well with salt water as with fresh';
growing grass with fresh water is considered 'normal' so that is the control group... the unchanged situation... the grass grown with salt water is called the treatement group
the independent variable is the thing you control, in this case whether the grass is treated with fresh or salt water... I would assume the dependent variable is the length of the grass after some given amount of time or possibly just whether or not grass grew at all... in any case the dependent variable is the thing that happens as a result of your control of the independent variable
If grass grows in both cases, you could measure several stalks of grass at various times and graph growth rates over time... seems to me that grass probably won't grow at all in salt water
The independent variable is the salt because that is what you're changing. The dependent variable is if the grass grew, because that is what you're measuring and it depends on the independent variable. The control is what you're comparing it too, so since you are adding salt to the water, you're comparing your results to fresh water, so your control would be the fresh water.
What are the independent variables, dependent variables, and control in this experiment?
i am seeing out of salt and water, sugar and water and plain water witch one will live the longest and i have no clue what to do when it comes to varibles!What are the independent variables, dependent variables, and control in this experiment?
i am seeing out of salt and water, sugar and water, and plain water witch WHCH one will live the longest and i have no clue what to do when it comes to varibles!
INDEPENDENT VAR: A manipulated (you change it) variable in an experiment or study whose presence or degree determines the change in the dependent variable.
You are chagne tyep type of water.
The outcome is how something lives it is the dependent var. It DEPENDS on the type of water.
Your controls are that the same type of water is used ( all distilled or all bottled) but not sugar + distailled and salt + bottled.
Also the type of organism shouldbe kept the same (size, health etc) as a control.What are the independent variables, dependent variables, and control in this experiment?
control is plain water
independent - type of water
dependent - time of life
I'm going to guess you're growing plants. You might want to specify that next time.
Independant variable: what you put in the water (salt, sugar, nothing)
Dependant variable: life of the plant
control: plain water
i am seeing out of salt and water, sugar and water, and plain water witch WHCH one will live the longest and i have no clue what to do when it comes to varibles!
INDEPENDENT VAR: A manipulated (you change it) variable in an experiment or study whose presence or degree determines the change in the dependent variable.
You are chagne tyep type of water.
The outcome is how something lives it is the dependent var. It DEPENDS on the type of water.
Your controls are that the same type of water is used ( all distilled or all bottled) but not sugar + distailled and salt + bottled.
Also the type of organism shouldbe kept the same (size, health etc) as a control.What are the independent variables, dependent variables, and control in this experiment?
control is plain water
independent - type of water
dependent - time of life
I'm going to guess you're growing plants. You might want to specify that next time.
Independant variable: what you put in the water (salt, sugar, nothing)
Dependant variable: life of the plant
control: plain water
A CONTROL GROUP is a group not exposed to the variable ina controlled ____ {WHAT} HELP PLEASE?
experiment.A CONTROL GROUP is a group not exposed to the variable ina controlled ____ {WHAT} HELP PLEASE?
experimentA CONTROL GROUP is a group not exposed to the variable ina controlled ____ {WHAT} HELP PLEASE?
experiment
Enviroment, Study
environment its used to determine a baseline to judge the changes in the other groups in the testing, like phamacuticals tested on mice.
experiment.
Experiment.
environmentbeauty
experimentA CONTROL GROUP is a group not exposed to the variable ina controlled ____ {WHAT} HELP PLEASE?
experiment
Enviroment, Study
environment its used to determine a baseline to judge the changes in the other groups in the testing, like phamacuticals tested on mice.
experiment.
Experiment.
environment
What would be the independent dependent variables and control group inthis experiment?
im doing this experiment where i compare two kindergarten classes to observe the relationhsips between the students depending on their seating arrangments throughout the school year. One class will remain in alphabetical order while the other class's seating arrangement will vary every three weeks. I'm confused on the concepts of independent, dependent variable, and control group....help please! thanks in advanceWhat would be the independent dependent variables and control group inthis experiment?
Your independent variable (the one that you, as the researcher, control or manipulate) is seating arrangement.
Your dependent variable (i.e., what you are measuring) is ';relationship development';. To actually conduct such a study, you would need to operationally define this variable. For example, ';identifies X as a friend'; may be one way to do this.
Your control group is the one which does not change (the one which remains in alphabetical order throughout the study).
~M~What would be the independent dependent variables and control group inthis experiment?
i think you have to use the if/then thing. for example if ? happens then ? will happen
for example if the class that is in alphabetical order and they are quiet you could say. if a class is in alphabetical order then they will be more quieter.
i think the independent variable is the group or subject your arer doing the experiment on.
and the dependent variable is either alphabetical order or quietness. iam not sure.
hope this helps
Your independent variable (the one that you, as the researcher, control or manipulate) is seating arrangement.
Your dependent variable (i.e., what you are measuring) is ';relationship development';. To actually conduct such a study, you would need to operationally define this variable. For example, ';identifies X as a friend'; may be one way to do this.
Your control group is the one which does not change (the one which remains in alphabetical order throughout the study).
~M~What would be the independent dependent variables and control group inthis experiment?
i think you have to use the if/then thing. for example if ? happens then ? will happen
for example if the class that is in alphabetical order and they are quiet you could say. if a class is in alphabetical order then they will be more quieter.
i think the independent variable is the group or subject your arer doing the experiment on.
and the dependent variable is either alphabetical order or quietness. iam not sure.
hope this helps
What is a Independent variable, dependent variable, and controlled variable in the question below.?
Does temperature affect the reaction rate of alka seltzer?
if you need any more information e-mail me at femtun1234@yahoo.comWhat is a Independent variable, dependent variable, and controlled variable in the question below.?
the reaction rate is the dependent variable as it depends on the temperature....assuming that is what ur question means.
the temperature is the independent variable as its value does not depend on any other thing.
if it is varied according to user, the temperature acts as the controlled variable as it is under ur control.
hope this is what u wanted n i hav helped u.What is a Independent variable, dependent variable, and controlled variable in the question below.?
In this experiment you're controlling the temperature to see the reactions in the alka seltzer right?
Controlled Variable: The temperature because you are changing and *controlling* it to make the reactions different in the seltzer.
Independent Variable: The alka seltzer because it doesn't change in this experiment and it would be fine *independently*
Dependant Variable: The reaction because you can't have a reaction unless you have a cause so it is *dependant* on the temperature and alka seltzer.
hope this helped :)
if you need any more information e-mail me at femtun1234@yahoo.comWhat is a Independent variable, dependent variable, and controlled variable in the question below.?
the reaction rate is the dependent variable as it depends on the temperature....assuming that is what ur question means.
the temperature is the independent variable as its value does not depend on any other thing.
if it is varied according to user, the temperature acts as the controlled variable as it is under ur control.
hope this is what u wanted n i hav helped u.What is a Independent variable, dependent variable, and controlled variable in the question below.?
In this experiment you're controlling the temperature to see the reactions in the alka seltzer right?
Controlled Variable: The temperature because you are changing and *controlling* it to make the reactions different in the seltzer.
Independent Variable: The alka seltzer because it doesn't change in this experiment and it would be fine *independently*
Dependant Variable: The reaction because you can't have a reaction unless you have a cause so it is *dependant* on the temperature and alka seltzer.
hope this helped :)
Identify the: control group, experimental group, and independent variable. ?
I really don't get this homework so give me a reasonable answers please.
Smither thinks that a special juice will increase the productivity of his workers. He creates two groups of 50workers each and assigns each group the same task. Group A is given a special juice to drink while they work. Group B is not given the special juice. After an hour, Smithers counts how many stacks of papers each group has stapeled together. Group A has completed 1,500stacks and Groupn B has comopleted 2,100 stacks. So, What is it??? Identify the: control group, experimental group, and independent variable. ?
Control: Group B (they aren't given anything)
Experimental: Group A (given the juice)
Independent: Juice
Smither thinks that a special juice will increase the productivity of his workers. He creates two groups of 50workers each and assigns each group the same task. Group A is given a special juice to drink while they work. Group B is not given the special juice. After an hour, Smithers counts how many stacks of papers each group has stapeled together. Group A has completed 1,500stacks and Groupn B has comopleted 2,100 stacks. So, What is it??? Identify the: control group, experimental group, and independent variable. ?
Control: Group B (they aren't given anything)
Experimental: Group A (given the juice)
Independent: Juice
If i had fertilizer in one plant and not the other, whats the 2nd plant, Control or dependant variable?
Please help!!!If i had fertilizer in one plant and not the other, whats the 2nd plant, Control or dependant variable?
If your are testing the hypothesis that fertilizer impacts the plant's growth then the control is the zero point or no fertilizer.
The dependent value is the answer to the question posed in your hypothesis, the plants growth.
While the independent variable is the various amounts of fertilizer used. The independent answers the question of what is changed in each pot?
All other variables should be accounted for by being consistent for each plant so they do not play a part in what is changed between the plants.
http://www.absoluteastronomy.com/topics/鈥?/a>
http://en.wikipedia.org/wiki/Dependent_a鈥?/a>
If your are testing the hypothesis that fertilizer impacts the plant's growth then the control is the zero point or no fertilizer.
The dependent value is the answer to the question posed in your hypothesis, the plants growth.
While the independent variable is the various amounts of fertilizer used. The independent answers the question of what is changed in each pot?
All other variables should be accounted for by being consistent for each plant so they do not play a part in what is changed between the plants.
http://www.absoluteastronomy.com/topics/鈥?/a>
http://en.wikipedia.org/wiki/Dependent_a鈥?/a>
NEED HELP ON ELEPHANT TOOTHPASTE PROJECT! (variable, control, etc.) all information is necessary! THANK YOU!!!?
plz plz plz plz plz plz help!NEED HELP ON ELEPHANT TOOTHPASTE PROJECT! (variable, control, etc.) all information is necessary! THANK YOU!!!?
http://www.ehow.com/how_2221567_make-ele鈥?/a>NEED HELP ON ELEPHANT TOOTHPASTE PROJECT! (variable, control, etc.) all information is necessary! THANK YOU!!!?
i know this doesn't really help but I did that in science class too, can't remember the info. though, but it really wasn't too exicting
heres a video of the experiment:
http://ca.youtube.com/watch?v=hhW3awh4M6鈥?/a>
hope I helped a little bit, sorry I can't really remember what happened
This doesn't follow any of the guidelines for asking a question. (Let alone it isn't even a question.)
Try rephrasing this in the form of a question and maybe we can assist you.
not sure what you need - be more specific.
huh??
http://www.ehow.com/how_2221567_make-ele鈥?/a>NEED HELP ON ELEPHANT TOOTHPASTE PROJECT! (variable, control, etc.) all information is necessary! THANK YOU!!!?
i know this doesn't really help but I did that in science class too, can't remember the info. though, but it really wasn't too exicting
heres a video of the experiment:
http://ca.youtube.com/watch?v=hhW3awh4M6鈥?/a>
hope I helped a little bit, sorry I can't really remember what happened
This doesn't follow any of the guidelines for asking a question. (Let alone it isn't even a question.)
Try rephrasing this in the form of a question and maybe we can assist you.
not sure what you need - be more specific.
huh??
What is the independent, dependent, and controlled variable in this situation. ?
Fifth graders
Split in three groups to see who can answer the same number of problems the fastest. One group gets no answers and no calculator. The next group gets can use a calculator. The third group was given the answers. Each group had the same amount of problems and a quiet room to work in.What is the independent, dependent, and controlled variable in this situation. ?
Group with answers = Controlled
*because it is what you would compare other results too.
Group with calc. = independent
and group with no answers or no calc = Dependent, because their results are constant
What is the independent, dependent, and controlled variable in this situation. ?
Independent variables are variables that can be controlled, but if another variable changes, this one doesn't change. In this case, it would be the number of problems and a quiet room.
Dependent variables are those that change when you alter another variable. For example, if you take away the answers, their speed to solve the problems will slow down. That is a dependent variable.
Controlled variables are those that you're using to experiment on the kids that can be changed by the person running the experiments. In this case, it would be the answers and the calculators.
depedent variable= thing that changes based on independent
number of problems answered the fastest
independent variable= calculator given to one group vs no calculator
control=the group that was given the answers
Independent-People in each group
Dependent-Intellegence of each student
Controlled-Whether or not they have a calculatorbeauty
Split in three groups to see who can answer the same number of problems the fastest. One group gets no answers and no calculator. The next group gets can use a calculator. The third group was given the answers. Each group had the same amount of problems and a quiet room to work in.What is the independent, dependent, and controlled variable in this situation. ?
Group with answers = Controlled
*because it is what you would compare other results too.
Group with calc. = independent
and group with no answers or no calc = Dependent, because their results are constant
What is the independent, dependent, and controlled variable in this situation. ?
Independent variables are variables that can be controlled, but if another variable changes, this one doesn't change. In this case, it would be the number of problems and a quiet room.
Dependent variables are those that change when you alter another variable. For example, if you take away the answers, their speed to solve the problems will slow down. That is a dependent variable.
Controlled variables are those that you're using to experiment on the kids that can be changed by the person running the experiments. In this case, it would be the answers and the calculators.
depedent variable= thing that changes based on independent
number of problems answered the fastest
independent variable= calculator given to one group vs no calculator
control=the group that was given the answers
Independent-People in each group
Dependent-Intellegence of each student
Controlled-Whether or not they have a calculator
Whats a Independent/dependent variable and control?
IV is the variable that you manipulate or change the value of
DV is the one the IV has the effect on.
Control is an experimental group that is not manipulated by the IV so that you can tell effects of non-experimental variables.Whats a Independent/dependent variable and control?
Do you go to Kastner???Whats a Independent/dependent variable and control?
y = mx + b
y is dependent on x
but of course it depends on your perspective
x = (y-b)/m
then x is dependent on y
a control is probably some type of constraints on the equation such as
y = mx + b where x %26lt; 10
DV is the one the IV has the effect on.
Control is an experimental group that is not manipulated by the IV so that you can tell effects of non-experimental variables.Whats a Independent/dependent variable and control?
Do you go to Kastner???Whats a Independent/dependent variable and control?
y = mx + b
y is dependent on x
but of course it depends on your perspective
x = (y-b)/m
then x is dependent on y
a control is probably some type of constraints on the equation such as
y = mx + b where x %26lt; 10
What are the controls AND variable in this experiment?
Solubility vs. Temperature of CO2 gas in soda
Soda is a drink that has CO2 dissolved in it. It must be kept under pressure to keep the CO2 dissolved. Opening a soda, allows the COs to bcome ';undissolved'; and ';fizz';. What is the effect of heating it?
Purpose: To observe if there is a difference in amount of gas dissolved in soda when it is heated.
Procedure:
1. take care during this exp. to control all the variables execpt the temperature of two containers of soda.
2. take a 12-16 oz can or bottle of soda and divide it evenly between two containers, one of which mush be microwavable or heatable on a stove.
3. Microwave or heat one on the stove until the soda boils vigorously (about 3 mins in the microwave open). The other one will remain sitting on the counter.
4. Fills two identical glasses with lots of ice. Pour the soda from one container into one of the glasses of ice at the same time as poruing the soda is the other container over the other glass of ice. Observe.What are the controls AND variable in this experiment?
The independent variable is the variable that is being changed: the heat
The dependent variable is the variable that changes as a result of what you did to the experiment: The difference in amount of gas.
The control is the the soda that is not heated, so you can see if there is a difference.
Soda is a drink that has CO2 dissolved in it. It must be kept under pressure to keep the CO2 dissolved. Opening a soda, allows the COs to bcome ';undissolved'; and ';fizz';. What is the effect of heating it?
Purpose: To observe if there is a difference in amount of gas dissolved in soda when it is heated.
Procedure:
1. take care during this exp. to control all the variables execpt the temperature of two containers of soda.
2. take a 12-16 oz can or bottle of soda and divide it evenly between two containers, one of which mush be microwavable or heatable on a stove.
3. Microwave or heat one on the stove until the soda boils vigorously (about 3 mins in the microwave open). The other one will remain sitting on the counter.
4. Fills two identical glasses with lots of ice. Pour the soda from one container into one of the glasses of ice at the same time as poruing the soda is the other container over the other glass of ice. Observe.What are the controls AND variable in this experiment?
The independent variable is the variable that is being changed: the heat
The dependent variable is the variable that changes as a result of what you did to the experiment: The difference in amount of gas.
The control is the the soda that is not heated, so you can see if there is a difference.
Wednesday, May 12, 2010
What is the controlled variable?
I am doing science fair on which household item has the most bacteria. i swabbed 5 different surfaces with a cotton swab and put them in petri dishes. what is the controlled variable?What is the controlled variable?
Controlled: type of household item
Uncontrolled: number of bacteria found
Controlled: type of household item
Uncontrolled: number of bacteria found
Gas Turbine Variable Exhaust Nozzle Control?
i want to know what is the variable exhaust nozzle control, the purpose or the application and maybe some example maybe....TQGas Turbine Variable Exhaust Nozzle Control?
it is used for the venturi effect, if you can change the diameter of the out put then the force will increase due to the restriction, allowing for much more power variances
it is used for the venturi effect, if you can change the diameter of the out put then the force will increase due to the restriction, allowing for much more power variances
In chemistry what is a variable and a control?
Say you are doing an experiment to see if sugar effects how a child behaves. You have two children (or groups of children).
Control - The control group would be the children who receive no sugar in their diet.
Variable - The variable in the experiment would be the children you feed candy or sugar to.In chemistry what is a variable and a control?
In any scientific experiment, a variable is something that changes. You should only have one or two variables. Variables are what is different in an experiment: for instance, if you have an experiment with several plants in varying amounts of sunlight, and you are trying to find out how that affects plant growth, you should keep everything else the same: species of plant, amount of water a plant gets, food, etc. These CONTROLled factors are the controls of an experiment.In chemistry what is a variable and a control?
Control = reference subject.
Variable = reference subject + experimentation
Quick example...
I'm doing an experiment to see what effect 3 different methods of burning oak wood has on the wood (silly, I know, but it's just an example). My control would be an unburned piece of oak wood. My variables would then be three other pieces of oak wood that I burn with three different methods of burning.
This doesn't just apply to chemistry, by the way. Controls and variables are used through pretty much all sciences.
Hope that helps.
A variable is something you change (vary) to see how the results differ with each experiment.
A control is something that remains the same in each experiment.
Control - The control group would be the children who receive no sugar in their diet.
Variable - The variable in the experiment would be the children you feed candy or sugar to.In chemistry what is a variable and a control?
In any scientific experiment, a variable is something that changes. You should only have one or two variables. Variables are what is different in an experiment: for instance, if you have an experiment with several plants in varying amounts of sunlight, and you are trying to find out how that affects plant growth, you should keep everything else the same: species of plant, amount of water a plant gets, food, etc. These CONTROLled factors are the controls of an experiment.In chemistry what is a variable and a control?
Control = reference subject.
Variable = reference subject + experimentation
Quick example...
I'm doing an experiment to see what effect 3 different methods of burning oak wood has on the wood (silly, I know, but it's just an example). My control would be an unburned piece of oak wood. My variables would then be three other pieces of oak wood that I burn with three different methods of burning.
This doesn't just apply to chemistry, by the way. Controls and variables are used through pretty much all sciences.
Hope that helps.
A variable is something you change (vary) to see how the results differ with each experiment.
A control is something that remains the same in each experiment.
Variable, control etc. experiment help?
the test tubes shown in the diagram contain water, starch, and Benedict's solution. When heated, Benedict's solution changes color from red to blue in the presence of sugar. Test tube B, in addition to the other ingredients, contains diastase, an enzyme that changes starch to sugar. Both test tubes are placed in a beaker of water and heated to boiling.
1. what is the variable in this experiment?
2. Which text tube is the control in this experiment?
3. Predict the results of the experiment.
please help?Variable, control etc. experiment help?
presence or absence of diastase is the variable
the tube without diastase is the control
I would expect a color change in tube B and not in Abeauty
1. what is the variable in this experiment?
2. Which text tube is the control in this experiment?
3. Predict the results of the experiment.
please help?Variable, control etc. experiment help?
presence or absence of diastase is the variable
the tube without diastase is the control
I would expect a color change in tube B and not in A
Gas Turbine Variable Exhaust Nozzle Control?
i want to know what is the variable exhaust nozzle control, the purpose or the application and maybe some example maybe....TQGas Turbine Variable Exhaust Nozzle Control?
On high performance jet aircraft, the nozzle control is under the management of an automated system. The purpose of it is to ensure maximum thrust by tailoring the convergent/divergent area during operation, especially for engines equipped with after burner.Gas Turbine Variable Exhaust Nozzle Control?
I'm not an engine guy, but this is out of the F15 manual...
09-3. Divergent Exhaust Nozzle System. The
divergent exhaust nozzle system is made up of
divergent nozzle segments, divergent seal segments,
divergent segment connecting links and divergent
nozzle brackets. The forward end of the divergent
nozzle segments are hinged to aft ends of the
convergent segments, and the outboard midpoints
are connected to the divergent nozzle brackets by
the divergent segment connecting links.
09-4. The forward ends of the divergent seal
segments are hinged to the convergent nozzle seal
segments. The divergent exhaust nozzle seeks the
best setting depending on pressure and velocity of
the exhaust gas and the velocity of airflow
surrounding the nozzle for maximum efficiency.
09-5. PRINCIPLES OF OPERATION.
09-6. Divergent Exhaust Nozzle System. The free
floating divergent exhaust nozzle system provides a
variable, divergent nozzle opening, depending on
the pressure of the exhaust gases and ambient air to
get high nozzle performance while maintaining low
external drag. The divergent exhaust nozzle system
operates independently of, but in unison with, the
convergent nozzle system to get maximum
engine/augmentor performance.
Are you talking about a Harrier jump Jet???
On high performance jet aircraft, the nozzle control is under the management of an automated system. The purpose of it is to ensure maximum thrust by tailoring the convergent/divergent area during operation, especially for engines equipped with after burner.Gas Turbine Variable Exhaust Nozzle Control?
I'm not an engine guy, but this is out of the F15 manual...
09-3. Divergent Exhaust Nozzle System. The
divergent exhaust nozzle system is made up of
divergent nozzle segments, divergent seal segments,
divergent segment connecting links and divergent
nozzle brackets. The forward end of the divergent
nozzle segments are hinged to aft ends of the
convergent segments, and the outboard midpoints
are connected to the divergent nozzle brackets by
the divergent segment connecting links.
09-4. The forward ends of the divergent seal
segments are hinged to the convergent nozzle seal
segments. The divergent exhaust nozzle seeks the
best setting depending on pressure and velocity of
the exhaust gas and the velocity of airflow
surrounding the nozzle for maximum efficiency.
09-5. PRINCIPLES OF OPERATION.
09-6. Divergent Exhaust Nozzle System. The free
floating divergent exhaust nozzle system provides a
variable, divergent nozzle opening, depending on
the pressure of the exhaust gases and ambient air to
get high nozzle performance while maintaining low
external drag. The divergent exhaust nozzle system
operates independently of, but in unison with, the
convergent nozzle system to get maximum
engine/augmentor performance.
Are you talking about a Harrier jump Jet???
What are the independent variables, dependent variables, and control in this experiment?
I'm doing an experiment about how different liquids behave. I am using colored water, vegetable oil, and corn syrup. To sum it all up, I'm just adding water,oil, and corn syrup into a test tube and recording my observations. But the thing is, I have to figure out the independent variable, dependent variable, and the control. And I have absolutely no clue on how to do that. All answers are appreciated.What are the independent variables, dependent variables, and control in this experiment?
Independent Variables: Water, vegetable oil, corn syrup. These are the variables under your control.
Dependent Variable: Whatever you observing. What are the independent variables doing as a result of your treatment? Are you heating them and observing the temperatures at which the liquids start boiling? If so, the temperature at boiling would be your dependent variable.
Control: You haven't specified a control liquid. You might consider adding plain water as the control against which the independent variables are compared.
The easiest way to keep independent and dependent variables apart is to ';mind the D's';. Dependent variables generate the Data you will record.What are the independent variables, dependent variables, and control in this experiment?
It depends. What are you trying to see? What is the difference between the three liquids? The amounts? The sizes of the test tubes? Which one tastes better?
To identify the variables, you must describe the experiment more completely...
Independent Variables: Water, vegetable oil, corn syrup. These are the variables under your control.
Dependent Variable: Whatever you observing. What are the independent variables doing as a result of your treatment? Are you heating them and observing the temperatures at which the liquids start boiling? If so, the temperature at boiling would be your dependent variable.
Control: You haven't specified a control liquid. You might consider adding plain water as the control against which the independent variables are compared.
The easiest way to keep independent and dependent variables apart is to ';mind the D's';. Dependent variables generate the Data you will record.What are the independent variables, dependent variables, and control in this experiment?
It depends. What are you trying to see? What is the difference between the three liquids? The amounts? The sizes of the test tubes? Which one tastes better?
To identify the variables, you must describe the experiment more completely...
Why can you have more than one controlled variable in an experiment?
You have to. For example if you were investigating the affect of temperature on an enzyme you would have to keep many other variables constant and controlled such as pH,volume of the reaction,amount of enzyme, amount of substrate, time of reaction, etc....Why can you have more than one controlled variable in an experiment?
Edit:
actually you can have more than one controlled variable also called a constant variable... most experiments actually DO have these.
http://www.sciencebuddies.org/science-fa鈥?/a>
http://en.wikipedia.org/wiki/Experimenta鈥?/a>Why can you have more than one controlled variable in an experiment?
A controlled Variable has a constant, thus it is controlled.
Edit:
actually you can have more than one controlled variable also called a constant variable... most experiments actually DO have these.
http://www.sciencebuddies.org/science-fa鈥?/a>
http://en.wikipedia.org/wiki/Experimenta鈥?/a>Why can you have more than one controlled variable in an experiment?
A controlled Variable has a constant, thus it is controlled.
My manipulated/responding variable, & control??
I'm doing a science experiment, with the problem being
';Which liquid dissolves Alka-Seltzer the fastest?';
I'm using Dr. Pepper, Coke, Pepsi, and Root Beer, along with water.
Other materials are stuff like plastic cups, stopwatch, etc..
What would my manipulated and responding variables be? Also, what is the control?
Thanks, and sorry, this stuff always confuses me.My manipulated/responding variable, %26amp; control??
Your manipulated variable would be the liquid and the responding would be the time it takes to dissolve. Presuming your using a constant amount of Alka-Seltzer for each liquid.
Your control is going to be the dissolve in water I would think.
';Which liquid dissolves Alka-Seltzer the fastest?';
I'm using Dr. Pepper, Coke, Pepsi, and Root Beer, along with water.
Other materials are stuff like plastic cups, stopwatch, etc..
What would my manipulated and responding variables be? Also, what is the control?
Thanks, and sorry, this stuff always confuses me.My manipulated/responding variable, %26amp; control??
Your manipulated variable would be the liquid and the responding would be the time it takes to dissolve. Presuming your using a constant amount of Alka-Seltzer for each liquid.
Your control is going to be the dissolve in water I would think.
In this experiment, what is the control and experimental group? What is the independent and dependent variable
http://en.wikipedia.org/wiki/Francesco_R鈥?/a>
thanks!In this experiment, what is the control and experimental group? What is the independent and dependent variable
The control in the experiment is the jar with NOTHING added to it. The experimental group is the group of jars with the dead fish, raw meat, and the unknown object in each of them. The independent variable is the type of covering on the jars. The dependent variable is the number of maggots.
thanks!In this experiment, what is the control and experimental group? What is the independent and dependent variable
The control in the experiment is the jar with NOTHING added to it. The experimental group is the group of jars with the dead fish, raw meat, and the unknown object in each of them. The independent variable is the type of covering on the jars. The dependent variable is the number of maggots.
What is a control, What is a variable.?
What is a control and what is a variable?What is a control, What is a variable.?
A control is something that remains constant, and a variable is what changes.What is a control, What is a variable.?
Control- Does not change no matter what throughout the entire experiment
Variable- Changes throughout the testbeauty
A control is something that remains constant, and a variable is what changes.What is a control, What is a variable.?
Control- Does not change no matter what throughout the entire experiment
Variable- Changes throughout the test
How can i control the variables for an experiment with a sport like swimming in terms of speed?
We are testing for our research paper what and how are the different factors afffect the speed of a swimmer. How can we control the variables? Is changing the temperature one example?How can i control the variables for an experiment with a sport like swimming in terms of speed?
Yes, temperature is one. To control the variables during an experiment into causes of something or other, you need to keep all of the factors for which you're testing (and other ';environmental'; factors that may affect the experiment) the same from test to test, and just change ONE of them at a time.
In your case, the likely factors are: temperature of the water (which is an easily measurable proxy for density of the water), chlorination level, length of the swim, maybe height and weight of the swimmer, what the swimmer is wearing perhaps, etc.
You could also test for other possibly affective variables, like the muscle mass of the swimmer (which you can obtain by seeing how much they can lift with arms and legs divided by their weight), time of day (fatigue), size of hands and feet of the swimmer, length of arms and legs, etc.
The key in controlling the variables, again, is to keep them all constant (even the ones for which you're not testing) and change only one. So, for example, if you're testing for water temperature's effect on swimmer speed, you'll want to use the same swimmer every time, at the same fatigue level, dressed in the same suit, in the same pool, doing the same length of swim, but change the temperature of the water a few degrees at a time while you take readings.
If you want to test for muscle mass effect, keep everything else the same, but change swimmers (use a fat guy, a skinny guy, a body builder, a runner, etc.).
If you don't control the variables as above, what happens is you end up accidentally changing two or more variables at once (for example, two different swimmers in two different water temperatures). Then you don't know if the differences in speed are due to the different swimmers, or the different temperatures, and your experiment is invalid.
Get the idea?
Good luck!How can i control the variables for an experiment with a sport like swimming in terms of speed?
You can control variables related to the pool: temperature, filtration, water depth, chlorination, etc.
You could also control variables related to the swimmer: different types of suits, goggles, swim caps, etc.
The main thing is that you want to try to only change one variable at a time, and keep everything else the same- that way you'll know if that variable is really having an effect.
yea..you got it changing the temperature, the size of the pool, different chemicals in the pool, the type of pool, hmm what else, even things such as the ph of the water, the hardness of the water. stuff like that, depending on what your trying to test. Nice Question, it really got me thinking.
Yes, temperature is one. To control the variables during an experiment into causes of something or other, you need to keep all of the factors for which you're testing (and other ';environmental'; factors that may affect the experiment) the same from test to test, and just change ONE of them at a time.
In your case, the likely factors are: temperature of the water (which is an easily measurable proxy for density of the water), chlorination level, length of the swim, maybe height and weight of the swimmer, what the swimmer is wearing perhaps, etc.
You could also test for other possibly affective variables, like the muscle mass of the swimmer (which you can obtain by seeing how much they can lift with arms and legs divided by their weight), time of day (fatigue), size of hands and feet of the swimmer, length of arms and legs, etc.
The key in controlling the variables, again, is to keep them all constant (even the ones for which you're not testing) and change only one. So, for example, if you're testing for water temperature's effect on swimmer speed, you'll want to use the same swimmer every time, at the same fatigue level, dressed in the same suit, in the same pool, doing the same length of swim, but change the temperature of the water a few degrees at a time while you take readings.
If you want to test for muscle mass effect, keep everything else the same, but change swimmers (use a fat guy, a skinny guy, a body builder, a runner, etc.).
If you don't control the variables as above, what happens is you end up accidentally changing two or more variables at once (for example, two different swimmers in two different water temperatures). Then you don't know if the differences in speed are due to the different swimmers, or the different temperatures, and your experiment is invalid.
Get the idea?
Good luck!How can i control the variables for an experiment with a sport like swimming in terms of speed?
You can control variables related to the pool: temperature, filtration, water depth, chlorination, etc.
You could also control variables related to the swimmer: different types of suits, goggles, swim caps, etc.
The main thing is that you want to try to only change one variable at a time, and keep everything else the same- that way you'll know if that variable is really having an effect.
yea..you got it changing the temperature, the size of the pool, different chemicals in the pool, the type of pool, hmm what else, even things such as the ph of the water, the hardness of the water. stuff like that, depending on what your trying to test. Nice Question, it really got me thinking.
Which one of these is the independent variable, the dependent variable, and the controlled variable?
in an experiment to find which freezes first, salt water, sugar water, or regular water, which variables are which?
the water will be placed in glass jars and kept in a freezer at the same temp?
thanksWhich one of these is the independent variable, the dependent variable, and the controlled variable?
controlled variable - temperature in the freezer, the amount of water and the jars
dependent variable - the time it takes for the first one to freeze
independent variable - the stuff you add to the water
enjoy :)
the water will be placed in glass jars and kept in a freezer at the same temp?
thanksWhich one of these is the independent variable, the dependent variable, and the controlled variable?
controlled variable - temperature in the freezer, the amount of water and the jars
dependent variable - the time it takes for the first one to freeze
independent variable - the stuff you add to the water
enjoy :)
What is a control and what is a variable?
control is the thing in the experiment that doesn't change.
the variable does change (it varies).
the variable does change (it varies).
What is the control and experimental group, independent and dependent variable?
http://vilenski.org/science/notebook/uni鈥?/a>What is the control and experimental group, independent and dependent variable?
The control was the broth in the flask that was covered. The experimental group was the broth in the flask that was covered. The independent variable was whether or not the flask was covered %26amp; the dependent variable was whether or not there was any growth :]
The control was the broth in the flask that was covered. The experimental group was the broth in the flask that was covered. The independent variable was whether or not the flask was covered %26amp; the dependent variable was whether or not there was any growth :]
Which of these is not a controlled variable: Size of paper clip, the pattern used, the number of clips?
Which of these is not a controlled variable: Size of paper clip, The same helicopter pattern was used, the number of paper clips, the height they were dropped from.Which of these is not a controlled variable: Size of paper clip, the pattern used, the number of clips?
You have no control over the helicopter pattern.
You can control the size of your paper clip, the number of paper clips, and the height they were dropped from.
You have no control over the helicopter pattern.
You can control the size of your paper clip, the number of paper clips, and the height they were dropped from.
What is an independent variable, a dependent variable, and a controlled variable?
plz explain with details if u can. science is not my best subject. i always get the dependent variable and the independent variable mixed up, and then i end up not knowing what both of them mean. can somebody plx help me. really appreciate. You're the best!What is an independent variable, a dependent variable, and a controlled variable?
An independent variable a variable that is changed on purpose for the experiment.
A dependent variable is a variable that is caused by another variable [the independent variable].
A controlled variable is the variable that is kept the same throughout the entire experiment; it isn't changed or touched at all.What is an independent variable, a dependent variable, and a controlled variable?
First of al, isnt this the math section?
The independent variable is the part that actually changes what is done.
The dependent in what is effected by the change.
And a controlled variable doesn't make sense. Control means the part that does NOT change in an experiment whuke variable means the part that changes
Independent Variable =a variable in a functional relation whose value determines the value or values of other variables, as x in the relation y = 3x2.
Dependent Variable=a variable in a functional relation whose value is determined by the values assumed by other variables in the relation, as y in the relation y = 3x2.
controlled variable= ?beauty
An independent variable a variable that is changed on purpose for the experiment.
A dependent variable is a variable that is caused by another variable [the independent variable].
A controlled variable is the variable that is kept the same throughout the entire experiment; it isn't changed or touched at all.What is an independent variable, a dependent variable, and a controlled variable?
First of al, isnt this the math section?
The independent variable is the part that actually changes what is done.
The dependent in what is effected by the change.
And a controlled variable doesn't make sense. Control means the part that does NOT change in an experiment whuke variable means the part that changes
Independent Variable =a variable in a functional relation whose value determines the value or values of other variables, as x in the relation y = 3x2.
Dependent Variable=a variable in a functional relation whose value is determined by the values assumed by other variables in the relation, as y in the relation y = 3x2.
controlled variable= ?
Why do you need a control and a independent and dependent variable in an experiment?
without these you would have nothing to measure your results against.
in science we are testing our hypothesis.
you need things to happen freely. and make observations of that.
then you need to control the test. and see if it differs from the uncontrolled experiment.
then you need to take a variable out to see if that was the reason in the change of the outcome of the experiment.
then you can conclude that if x factor is eliminated then the result will be Y.
so x is the cause of the chain of events in your natural observation.
then that will lead to how you can manipulate the outcome of something by controllin that X factor.
Why do you need a control and a independent and dependent variable in an experiment?
This question has been asked and answered several times on this site. Go the search bar and type it in. Why do you need a control and a independent and dependent variable in an experiment?
to limit the amount of extrenuous variables on the test results.
in science we are testing our hypothesis.
you need things to happen freely. and make observations of that.
then you need to control the test. and see if it differs from the uncontrolled experiment.
then you need to take a variable out to see if that was the reason in the change of the outcome of the experiment.
then you can conclude that if x factor is eliminated then the result will be Y.
so x is the cause of the chain of events in your natural observation.
then that will lead to how you can manipulate the outcome of something by controllin that X factor.
Why do you need a control and a independent and dependent variable in an experiment?
This question has been asked and answered several times on this site. Go the search bar and type it in. Why do you need a control and a independent and dependent variable in an experiment?
to limit the amount of extrenuous variables on the test results.
What is a test variable and a controlled variable?
i have a science assignment and it asks me to state the test varibles and controlled variable. thanks :)What is a test variable and a controlled variable?
test variable you change
control you don'tWhat is a test variable and a controlled variable?
The test variable is the one that you are interested in and the controll is just to measure what happens when nothing changes. For example A test to see if a new medicine works. The test variable would be the actuall medicine, while the controll would be a fake (like a sugar pill) that would do nothing. After some time we check up on the patients and see if there is a difference between the test and control. If the patients with the real medicine got better then our new drug is a success!
test variable you change
control you don'tWhat is a test variable and a controlled variable?
The test variable is the one that you are interested in and the controll is just to measure what happens when nothing changes. For example A test to see if a new medicine works. The test variable would be the actuall medicine, while the controll would be a fake (like a sugar pill) that would do nothing. After some time we check up on the patients and see if there is a difference between the test and control. If the patients with the real medicine got better then our new drug is a success!
A variable declared inside the for loop control cannot be referenced outside the loop?
True or False (Explain)A variable declared inside the for loop control cannot be referenced outside the loop?
True. A variable declared within a bracket cannot be referenced outside, though any declared outside can be used in any subsequent levels
For example
void main()
{
int i;
if(cond){
int j;
while(cond){
int k;
}
}
}
The variable i can be used anywhere in main. j can be used in the if or while statements only. k can only be used within the while statement.
True in C and Java, at least for the most part.A variable declared inside the for loop control cannot be referenced outside the loop?
True
Java example:
for(int i=0;i%26lt;5;i++)
{
int count=0;
count++;
}
If you do something like this, then everytime count will be reset to 0 and incremented by 1.
Neither you will be able to print its value from outside the for loop.
The correct way is:
int count=0;
for(int i=0;i%26lt;5;i++)
{
count++;
}
System.out.println(count);
The output will be 5. i.e. the no. times the for loop has run.
no it can be referenced if u give its declaration outside
What language?
It can be in PHP.....
can be done ...depends on the scope which u give to it
True. A variable declared within a bracket cannot be referenced outside, though any declared outside can be used in any subsequent levels
For example
void main()
{
int i;
if(cond){
int j;
while(cond){
int k;
}
}
}
The variable i can be used anywhere in main. j can be used in the if or while statements only. k can only be used within the while statement.
True in C and Java, at least for the most part.A variable declared inside the for loop control cannot be referenced outside the loop?
True
Java example:
for(int i=0;i%26lt;5;i++)
{
int count=0;
count++;
}
If you do something like this, then everytime count will be reset to 0 and incremented by 1.
Neither you will be able to print its value from outside the for loop.
The correct way is:
int count=0;
for(int i=0;i%26lt;5;i++)
{
count++;
}
System.out.println(count);
The output will be 5. i.e. the no. times the for loop has run.
no it can be referenced if u give its declaration outside
What language?
It can be in PHP.....
can be done ...depends on the scope which u give to it
What is the control and variables of a mold experiment?
What is the control and variables of a mold experiment?
to be more specific on the experiment all i did was get out a banana bread cheese n milk and left it out and checked it for mold everyday for 4 days.What is the control and variables of a mold experiment?
the control could be a sterile agar plate (http://en.wikipedia.org/wiki/Agar_plate)
the variables could be agar plates streaked with cheese/milk,etcWhat is the control and variables of a mold experiment?
you must have done it wrong because there's no hint of a control in your description.
a control is a way to figure out just what effects something has...
for example if your measure the usefulness of a fertilizer you would have two plants one that get the fertilizer one that dosn't, the one that dosn't is the control. it simulates what happens ';naturally';
the variables are all the different things that effect your results, like room humidity.
The control, was something that you knew would or would not grow mold. You didn't subject any one to anything different than the others, right, because that would effect those answers. The variable was the type of food that you left out. Hope it helps!
to be more specific on the experiment all i did was get out a banana bread cheese n milk and left it out and checked it for mold everyday for 4 days.What is the control and variables of a mold experiment?
the control could be a sterile agar plate (http://en.wikipedia.org/wiki/Agar_plate)
the variables could be agar plates streaked with cheese/milk,etcWhat is the control and variables of a mold experiment?
you must have done it wrong because there's no hint of a control in your description.
a control is a way to figure out just what effects something has...
for example if your measure the usefulness of a fertilizer you would have two plants one that get the fertilizer one that dosn't, the one that dosn't is the control. it simulates what happens ';naturally';
the variables are all the different things that effect your results, like room humidity.
The control, was something that you knew would or would not grow mold. You didn't subject any one to anything different than the others, right, because that would effect those answers. The variable was the type of food that you left out. Hope it helps!
What is a manipulated variable, controlled variable and a responding variable?
please helpWhat is a manipulated variable, controlled variable and a responding variable?
x is manip
responding is yWhat is a manipulated variable, controlled variable and a responding variable?
you chose a lame best answer
i agreed with Juls
a manipulated variable is the variable that changes. the controlled variable is what you use to change the manipulated variable. the responding variable is i don't know.
Definitions:
Manipulated Variable- Also known as Independent Variable, This is what the scientist purposely changes
Controlled Variable- Variable that stays the same
Responding Variable- Variable that May (usually) or may not change.
I hope you understand the definitions!
Later,
Kenya
P.S. We just did this in science class, so it is fresh on my brain.
A manipulated variable the factor or quantity the investigator changes intentionally. This is established before doing the test.
A controlled variable is a factor that may alter or affect the results. You keep the value the same throughout the testing
Responding variable is factor or values that are measured results of the changed manipulated variable
x is manip
responding is yWhat is a manipulated variable, controlled variable and a responding variable?
you chose a lame best answer
Report Abuse
i agreed with Juls
Report Abuse
a manipulated variable is the variable that changes. the controlled variable is what you use to change the manipulated variable. the responding variable is i don't know.
Definitions:
Manipulated Variable- Also known as Independent Variable, This is what the scientist purposely changes
Controlled Variable- Variable that stays the same
Responding Variable- Variable that May (usually) or may not change.
I hope you understand the definitions!
Later,
Kenya
P.S. We just did this in science class, so it is fresh on my brain.
A manipulated variable the factor or quantity the investigator changes intentionally. This is established before doing the test.
A controlled variable is a factor that may alter or affect the results. You keep the value the same throughout the testing
Responding variable is factor or values that are measured results of the changed manipulated variable
What is the difference between a controlled variable and an uncontrolled variable?
In any type of experiment, you have controls, and variables. A control is something about the experiment that functions the exact same way, every time. It is something you can depend on. A (uncontrolled) variable is what you are trying to measure. You are not sure what the variable will do in certain situations, and thus the reason for the experiment. A controlled variable is in between the two. It is a factor of the experiment that will act differently, but not unexpectedly.
Example: You are doing an experiment to turn a glass of water red, using food coloring. Water is your control. It will behave like water every time you do the experiment. The food coloring is your controlled variable. You know it will turn the water red, but you don't know by how much. The amount of food coloring is you uncontrolled variable. You are conducting the experiment to find out how much food coloring turns the water red. Use too little, and the water will only turn pink. The amount of food coloring (uncontrolled variable) is what you are trying to figure out by doing the experiment. Hope this helps.What is the difference between a controlled variable and an uncontrolled variable?
Controlled variable is the one you can affect at your will, and uncontrolled variable is the one that does not depend on your will, for example. Your car speed is a controlled variable and the weather is an uncontrolled variableWhat is the difference between a controlled variable and an uncontrolled variable?
the ';un';..
One is controlled the other is not
There will be factors of an uncontrolled variable which you cannot account for nor predict.
Chaos theory.beauty
Example: You are doing an experiment to turn a glass of water red, using food coloring. Water is your control. It will behave like water every time you do the experiment. The food coloring is your controlled variable. You know it will turn the water red, but you don't know by how much. The amount of food coloring is you uncontrolled variable. You are conducting the experiment to find out how much food coloring turns the water red. Use too little, and the water will only turn pink. The amount of food coloring (uncontrolled variable) is what you are trying to figure out by doing the experiment. Hope this helps.What is the difference between a controlled variable and an uncontrolled variable?
Controlled variable is the one you can affect at your will, and uncontrolled variable is the one that does not depend on your will, for example. Your car speed is a controlled variable and the weather is an uncontrolled variableWhat is the difference between a controlled variable and an uncontrolled variable?
the ';un';..
One is controlled the other is not
There will be factors of an uncontrolled variable which you cannot account for nor predict.
Chaos theory.
Help!!!!!What is my dependent, indepent and control variables in my science project?
The title of my project is ';Which will mold the fastest: Bread, Milk, cheese, and Banana. They will be placed in the same cabinet.Help!!!!!What is my dependent, indepent and control variables in my science project?
Independent variables answer the question ';What do I change?';.
Dependent variables answer the question ';What do I observe?';.
Controlled variables answer the question ';What do I keep the same
Independent variables answer the question ';What do I change?';.
Dependent variables answer the question ';What do I observe?';.
Controlled variables answer the question ';What do I keep the same
What do you think could be a control variable of my Sociology research survey?
I'm going to survey students and ask what their views are towards the traditional role of women in the household. The independent variable will be religion, so I want to see if the more religious you are, the more support you will have towards the traditional role. and less religious, more egalitarian view. the dependent variable is their attitudes.
However, I need to identify two control variables. I was thinking maybe gender and race? but if anyone else have any ideas, that would be great. my prof said even if the control variables don't end up being right, it will be okay.
thanks!What do you think could be a control variable of my Sociology research survey?
I think gender and income would make good control variables.
However, I need to identify two control variables. I was thinking maybe gender and race? but if anyone else have any ideas, that would be great. my prof said even if the control variables don't end up being right, it will be okay.
thanks!What do you think could be a control variable of my Sociology research survey?
I think gender and income would make good control variables.
What are the control variables in the question ';how does the length of wire affect the resistance';?
this is for my coursework and i have completed it. i just need to confirm. i have done experiments for this in class and now its time for the case study. So, one of the questions in the case study is, discuss the independant, dependant and control variables involved. i have done the independant and dependant. but what is meant by the control? thanks. please bare in mind that i have to give this in 1st draft mode tomarow. the 2nd of aprilWhat are the control variables in the question ';how does the length of wire affect the resistance';?
The Control Variables are the constants used for each experiment
and in this case the other variables that may affect the resistance.
To prove length of wire affects resistance all other variables must remain the same (constant)
The type of material
The cross sectional area
The temperatureWhat are the control variables in the question ';how does the length of wire affect the resistance';?
The control variables are things that you keep the same through out. in your experiment i would say it is the actual material the wire is made out of. You have to keep it the same other wise it would be difficult to assess whether it has been the length or type of metal that has made your results different, and your data might be confused.
For example if you wanted to do an experiment on how fast different ice cream melts it would be unfair to have one of the ice creams kept near a radiator and one inside the fridge as it is the type of ice cream that is your independent variable not environment.
Anything you keep the same is the control variable. Normally it's something like temperature or type of material if you get another question like this.
Hope this helps.
I guess they are the variables you choose.
The length of wire, the thickness of wire and so on.
Length of wire.
The Control Variables are the constants used for each experiment
and in this case the other variables that may affect the resistance.
To prove length of wire affects resistance all other variables must remain the same (constant)
The type of material
The cross sectional area
The temperatureWhat are the control variables in the question ';how does the length of wire affect the resistance';?
The control variables are things that you keep the same through out. in your experiment i would say it is the actual material the wire is made out of. You have to keep it the same other wise it would be difficult to assess whether it has been the length or type of metal that has made your results different, and your data might be confused.
For example if you wanted to do an experiment on how fast different ice cream melts it would be unfair to have one of the ice creams kept near a radiator and one inside the fridge as it is the type of ice cream that is your independent variable not environment.
Anything you keep the same is the control variable. Normally it's something like temperature or type of material if you get another question like this.
Hope this helps.
I guess they are the variables you choose.
The length of wire, the thickness of wire and so on.
Length of wire.
BEsT AnSwEr WiLl BE SeLecTEd!!!!!!!!!!!!!!!!!!!! (constant, control, variable???)?
Biology Thermoregulation Experiment
Purpose
To investigate the responses of the human body to extremes of ambient temperature.
Materials
Each group will require:
oral thermometer
skin thermometer
alcohol swabs
buckets/tubs
hot and cold water
ice cubes
spray bottle
stopwatch
electric fan
heater
sleeping bag
bathing suit
hat, scarf and gloves
Procedure
Read the procedure and formulate an hypothesis about the effect that extremes in in ambient temperature (after 20-minute exposure) will have on core temperature (as measure by an oral thermometer) and skin temperature in humans. Complete this section of data sheet 1.
Identify the variable, control and factors that will be kept constant. The experimental procedure should take no longer than 30 minutes.
Work in groups of 3 or 4. Stop if the subject/s feel unwell at any time.
Cold subjects:
Record skin and core temperatures of the subject before you begin.
Make the subject/s as cold as possible by:
-wearing bathers
-placing in a cold breezeway
-placing feet in buckets of icy water
-exposing the body to ice from a spray bottle containing icy water
Hot subjects:
Record skin and core temperatures of the subject before you begin.
Make the subject/s as hot as possible by:
-wrapping in a sleeping bag
-wearing hat, scarf and gloves
-sitting in front of a heater
For both cold and hot subjects, record the core and skin temperature every 2 minutes, as well as any other observations.
Record the class results.
Using a Spreadsheet graph the temperature readings for core and skin temperature against time for your subject/s.
______________________________________鈥?br>
Okay, from reading the above I'm supposed to identify the variable, control and contants. I don't know what all those terms mean. So, if anyone could provide examples of those it would be appreciated. Or better just identify the variable, control and constants and explain why they are so that I know why and what these terms are.BEsT AnSwEr WiLl BE SeLecTEd!!!!!!!!!!!!!!!!!!!! (constant, control, variable???)?
The variable will be the number that will change. Usually is what you want to test. I guess here it is the temperature of the body.
The control will be the group that will receive nothing, meaning neither temperatures. But the control group should stay in the same normal room temp in the same room.
The factors that will be kept constant... I am guessing that it is the temperature in the hot and cold group. For example, all the hot group subjects will experience a 35C temperature, and all the cold group subjects will experience a 15C temperature.
I guess you can keep the heater/breezeway temperature the same, and the temperature of the water the same. Same sleeping bag, same hat, same scarf, same gloves, bathing suit made of the same material, same distance from the heater, same position, same location. Make all subjects in the groups experience as similar as possible.
Purpose
To investigate the responses of the human body to extremes of ambient temperature.
Materials
Each group will require:
oral thermometer
skin thermometer
alcohol swabs
buckets/tubs
hot and cold water
ice cubes
spray bottle
stopwatch
electric fan
heater
sleeping bag
bathing suit
hat, scarf and gloves
Procedure
Read the procedure and formulate an hypothesis about the effect that extremes in in ambient temperature (after 20-minute exposure) will have on core temperature (as measure by an oral thermometer) and skin temperature in humans. Complete this section of data sheet 1.
Identify the variable, control and factors that will be kept constant. The experimental procedure should take no longer than 30 minutes.
Work in groups of 3 or 4. Stop if the subject/s feel unwell at any time.
Cold subjects:
Record skin and core temperatures of the subject before you begin.
Make the subject/s as cold as possible by:
-wearing bathers
-placing in a cold breezeway
-placing feet in buckets of icy water
-exposing the body to ice from a spray bottle containing icy water
Hot subjects:
Record skin and core temperatures of the subject before you begin.
Make the subject/s as hot as possible by:
-wrapping in a sleeping bag
-wearing hat, scarf and gloves
-sitting in front of a heater
For both cold and hot subjects, record the core and skin temperature every 2 minutes, as well as any other observations.
Record the class results.
Using a Spreadsheet graph the temperature readings for core and skin temperature against time for your subject/s.
______________________________________鈥?br>
Okay, from reading the above I'm supposed to identify the variable, control and contants. I don't know what all those terms mean. So, if anyone could provide examples of those it would be appreciated. Or better just identify the variable, control and constants and explain why they are so that I know why and what these terms are.BEsT AnSwEr WiLl BE SeLecTEd!!!!!!!!!!!!!!!!!!!! (constant, control, variable???)?
The variable will be the number that will change. Usually is what you want to test. I guess here it is the temperature of the body.
The control will be the group that will receive nothing, meaning neither temperatures. But the control group should stay in the same normal room temp in the same room.
The factors that will be kept constant... I am guessing that it is the temperature in the hot and cold group. For example, all the hot group subjects will experience a 35C temperature, and all the cold group subjects will experience a 15C temperature.
I guess you can keep the heater/breezeway temperature the same, and the temperature of the water the same. Same sleeping bag, same hat, same scarf, same gloves, bathing suit made of the same material, same distance from the heater, same position, same location. Make all subjects in the groups experience as similar as possible.
Subscribe to:
Posts (Atom)