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2.3 Transfer of thermal energy

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Question 30

The Earth absorbs energy from the Sun and re-radiates it back into space to maintain temperature stability. Because the Earth is much cooler than the Sun, it emits radiation at longer wavelengths.

In which part of the electromagnetic spectrum is most of this re-radiated thermal energy from the Earth concentrated?

A

ultraviolet radiation

B

infrared radiation

C

visible light

D

X-rays

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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