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2.3 Transfer of thermal energy

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Question 7

A student is investigating different insulating materials to see how effective they are at reducing thermal energy loss from a beaker of hot water.

Plan an experiment to compare how well five different insulating materials keep hot water from cooling down.

The following apparatus is available to the student:

  • five different insulating materials
  • glass beakers
  • supply of hot water
  • scissors and adhesive tape to secure materials

Other apparatus normally available in a school laboratory can also be used.

In your plan:

  • list any additional apparatus required
  • explain briefly how you do the investigation, including the measurements you take
  • state the key variables to be kept constant
  • draw a suitable table, with column headings, to show how to display your readings (you are not required to enter any readings in the table)
  • explain how you use the results to reach a conclusion.
[6]
Markscheme

2.3 Transfer of thermal energy Questions

  1. IGCSE
  2. /Physics
  3. /2.3 Transfer of thermal energy

301 exam-style questions on CIE IGCSE Physics 2.3 Transfer of thermal energy, covering 2.3.1a Thermal conductors and thermal insulators, 2.3.1b Explaining thermal conduction, 2.3.2 Convection, 2.3.3a Thermal radiation, 2.3.3b Surface colour and texture, 2.3.3c Rate of emission and absorption of radiation, and 2.3.4 Consequences of thermal energy transfer. Each one has a worked solution and a mark scheme showing where the marks go.

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