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3.1 Energy stores and calculations

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Question 35

A student investigated how the number of layers of cardboard insulation affects the rate of cooling of a beaker of hot water.

They used the following method:

  1. Wrap 1 layer of cardboard around a glass beaker.
  2. Pour 150 cm3 of hot water into the beaker.
  3. Measure the initial temperature of the water.
  4. Start a stopwatch and record the final temperature of the water after 10 minutes.
  5. Repeat the steps using 2 layers and then 3 layers of cardboard.

State two improvements the student could make to this investigation to obtain more accurate and reliable data.

[2]
Markscheme

3.1 Energy stores and calculations Questions

  1. GCSE
  2. /Physics
  3. /3.1 Energy stores and calculations

82 exam-style questions on Edexcel GCSE Physics 3.1 Energy stores and calculations, covering 3.1.1 Gravitational potential energy, 3.1.2 Kinetic energy, and 3.1.3 Energy transfers and conservation of energy. Each one has a worked solution and a mark scheme showing where the marks go.

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