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2.3 Transfer of thermal energy

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Question 114

Which statement about convection is correct?

A

Convection occurs in fluids because, when heated, a fluid expands and becomes less dense.

B

Convection occurs in fluids because, when heated, a fluid contracts and becomes more dense.

C

Convection can only occur in gases.

D

Convection can occur in solids, liquids, and gases.

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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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