Physics 0625 · IGCSE · Transfer of thermal energy

Transfer of thermal energy — practice question

Fig. 4.1 shows a pan placed on a hotplate. The hotplate heats both the pan and the water.
(a(i))[1]

Use your ideas about thermal energy transfer to explain why the pan has a wooden handle.

(a(ii))[2]

Use your ideas about thermal energy transfer to explain why the pan has shiny sides.

(a(iii))[1]

Use your ideas about thermal energy transfer to explain why the pan has a copper base.

(b)[4]

Explain how thermal energy from the heater warms the whole room. In your answer, use ideas about the density of air. You may refer to Fig. 4.2.

Worked solution & mark scheme

This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: Cuts down heat transfer to the handle / wood is an insulator

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