Whats the difference between a Control, Independent Variable, and Dependent Variable?

I was doing my science homework and i got stuck with these. The question is asking for each of them in certain situations. I don't know what to put though. Thanks for any help =]Whats the difference between a Control, Independent Variable, and Dependent Variable?
Independent variables are variables that aren't based on other variables. Dependent variables depend on the independent variables (hence the name). Controls are unchanging variables.





For example, if you were measuring plant growth based on amount of sunlight, the sunlight woud be independent, the growth that it causes would be dependent, and all other factors (water, age of plant, soil, etc.) would be controls.Whats the difference between a Control, Independent Variable, and Dependent Variable?
An independent variable is the variable that the scientist conducting the experiment manipulates in order to influence the experiment.


(i.e. if you were testing whether the volume of music effects hearing loss, then the volume of music would be your independent variable).





The dependent variable is the variable that responds in your experiment. It is the result. (i.e. hearing loss in the above experiment).





A control (as in control group) would be a group that is not effected by the independent variable. You are using this one (think of it as the Before) to compare to the other groups that tested on (the Afters). In the fake experiment it would be a group of people that were not subjected to loud music. Their hearing would be entirely the same as it was before the experiment.





Hope this helps! Good luck!
Control never changes its what you measure everything else against





an independent variable changes on its own





a dependent variable changes because something else has changed first to cause it to change





example: driving a car


you are going 55mph


independent variable, you decide you want to go faster just because


dependent variable, you decide you want to go faster because someone is tailgating/following you






Controlled Variable- THe variable that is unchanged (the same)


Indpendent Variable- THe variable that is not dependent as in it is by itself ex: If you have a graph on plant growth time would be the independent variable because the measure of the growth of the plant depends on time.


Dependent Variable- The variable that depends on the other variable





Hope this Helps!!!
Control is like the group without the thing that is being tested





Dependent is the thing that is being changed





EX:





Testing if a fire will get bigger if you add gasoline to it





you have two fires





one you add gasoline





the other one you dont





so the one you dont add gasoline is the control





and the gasoline is dependent variable
the control is the group that stays the same





the independent variable is wat u change





n the dependent is the thing that changes bc of wat u change






control doesnt change


independant doesnt change and is usually time or distance


the dependant varyable depends on the independant variable


for example....as time (independant) goes on the egg rots (dependant)



control- kept same





iv- what you change (manipulate)_





dv- what result changes as a result of the change of the iv