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A student was investigating the effect of sweating - Edexcel - GCSE Biology - Question 4 - 2019 - Paper 1
Question 4
A student was investigating the effect of sweating. The student set up two conical flasks each with a thermometer as shown in Figure 5. Flask 1 was covered in wet t... show full transcript
Worked Solution & Example Answer:A student was investigating the effect of sweating - Edexcel - GCSE Biology - Question 4 - 2019 - Paper 1
Step 1
State two variables that would need to be controlled in this investigation.
Answer
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The volume of hot water added to each flask must be kept constant to ensure that the same amount of thermal energy is available for measurement.
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The ambient temperature of the room should be controlled to prevent fluctuations that could affect the results.