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2.3.4 Consequences of thermal energy transfer

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Question 1

In cold weather, a bird fluffs up its feathers to help it stay warm.

How does fluffing its feathers help the bird to stay warm?

A

Air can circulate between the feathers and heat up the skin by convection.

B

Air trapped by the feathers reduces heat loss from the skin by convection.

C

The feathers are thicker so they conduct heat away from the skin more quickly.

D

The feathers conduct heat to the skin from the air outside.

Markscheme

2.3.4 Consequences of thermal energy transfer Questions

  1. IGCSE
  2. /Physics
  3. /2.3.4 Consequences of thermal energy transfer

62 exam-style questions on CIE IGCSE Physics 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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