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2.3 Transfer of thermal energy

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Question 12

The table shows the state of materials W, X, Y, and Z, and whether each one contains free electrons.

MaterialGasLiquidSolidContains free electrons
W✓\checkmark✓×\times××\times××\times×
X×\times××\times×✓\checkmark✓×\times×
Y×\times×✓\checkmark✓×\times××\times×
Z×\times××\times×✓\checkmark✓✓\checkmark✓

Using the information in the table, which comparison of the thermal conduction in the materials is correct?

A

It is better in W than in X and Y.

B

It is better in Y than in Z and W.

C

It is better in Z than in X and Y.

D

It is better in X than in Z and W.

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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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