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A student wanted to make a jacket to wear in cold weather - Edexcel - GCSE Biology - Question 10 - 2023 - Paper 2
Question 10
A student wanted to make a jacket to wear in cold weather. The student compared the insulation properties of wool as a natural material with polyester as a syntheti... show full transcript
Worked Solution & Example Answer:A student wanted to make a jacket to wear in cold weather - Edexcel - GCSE Biology - Question 10 - 2023 - Paper 2
Step 1
Step 2
State one variable that should be controlled in this investigation.
Answer
One variable that should be controlled in this investigation is the initial temperature of the hot water. Keeping the water temperature consistent ensures that any changes in temperature measured can be attributed to the insulating properties of the materials.
Step 3
Describe a control that could be used for this investigation.
Answer
A control that could be used for this investigation is using a beaker wrapped with a material that has known insulating properties, such as a thermally conductive material. This would allow a comparison against both wool and polyester to measure how effectively each material insulates compared to the control.