A student investigated how different insulating materials affect the energy transfer from bottles of very hot water - AQA - GCSE Physics - Question 5 - 2023 - Paper 1
Question 5
A student investigated how different insulating materials affect the energy transfer from bottles of very hot water.
Figure 6 shows some of the equipment used.
Fig... show full transcript
Worked Solution & Example Answer:A student investigated how different insulating materials affect the energy transfer from bottles of very hot water - AQA - GCSE Physics - Question 5 - 2023 - Paper 1
Step 1
Why did the student use the funnel?
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Answer
The student used the funnel as a safety precaution to prevent spillages while pouring very hot water into each bottle.
Step 2
Why did the student not use insulation for bottle A?
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Answer
Bottle A was the control, meaning it was not insulated to provide a baseline for comparing the other bottles with insulation.
Step 3
What equipment could the student use to measure time?
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The student could use a stopclock or stopwatch to measure time accurately during the experiment.
Step 4
Explain two ways that the student could improve the investigation to be able to make a valid conclusion.
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The student should ensure that the starting temperature of the water is the same for each experiment. This consistency allows for a fair comparison of how different insulating materials affect energy transfer.
Additionally, the student should use the same volume of water in each bottle. This reduces variability and helps to isolate the effect of insulation on heat retention.
Step 5
What type of graph should the student have plotted?
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The student should have plotted a bar chart. A bar chart is appropriate since it allows for the comparison of different insulating materials as categories.
