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.


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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.