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2.3 Transfer of thermal energy

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Question 130

An air-conditioning unit (to cool a room) and a heating radiator (to warm a room) are to be installed. Each can be positioned either high up near the ceiling (top) or low down near the floor (bottom). Which option shows the most effective position for each device to circulate air efficiently by convection?

A

Air-conditioning unit at the top, Radiator at the bottom.

B

Air-conditioning unit at the top, Radiator at the top.

C

Air-conditioning unit at the bottom, Radiator at the bottom.

D

Air-conditioning unit at the bottom, Radiator at the top.

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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