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2.3.2 Convection

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Question 70

A room is heated by a heater installed near the floor. Why is the heater placed near the floor to warm the room most efficiently?

A

Warm air is less dense and rises, while cooler, denser air sinks.

B

Warm air is a poor conductor, so heat is not conducted out through the floor.

C

Warm air is a good conductor, so heat is easily conducted to the top of the room.

D

Warm air remains near the floor and prevents convection.

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2.3.2 Convection Questions

  1. IGCSE
  2. /Physics
  3. /2.3.2 Convection

73 exam-style questions on CIE IGCSE Physics 2.3.2 Convection. Each one has a worked solution and a mark scheme showing where the marks go.

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