Physics 5054 · O Level · Transfer of thermal energy
Transfer of thermal energy — practice question
A copper saucepan fitted with a wooden handle contains cold water. It is set on a heating element that is glowing red hot as part of an electric cooker. Fig. 4.1 illustrates the saucepan resting on the heating element.
(a)[1]
Explain why wood is a suitable choice for the saucepan handle.
(b(i))[3]
Describe and explain, in terms of free electrons, how thermal energy is transferred through the copper base of the saucepan.
(b(ii))[3]
Describe and explain how thermal energy is carried upwards through the water.
Worked solution & mark scheme
This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Wood conducts heat poorly / is a good insulator of heat” …