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2.3 Transfer of thermal energy

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Question 171

Two methods by which thermal energy can be transferred are convection and radiation.

Which statement is correct?

A

Convection can transfer thermal energy through a solid block of copper.

B

Convection involves the bulk movement of fluid driven by density differences.

C

Thermal radiation requires a material medium to transfer energy.

D

Thermal radiation is only emitted by objects at temperatures above 100∘C100^\circ\text{C}100∘C.

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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