Physics 0625 · IGCSE · Transfer of thermal energy

Transfer of thermal energy — practice question

Fig. 4.1 shows a cold plastic spoon that has just been put into hot liquid in a cup.
(a)[3]

Describe, in terms of molecules, why the temperature of the entire spoon rises.

(b)[2]

Describe another process by which the temperature of the whole spoon increases.

(c)[3]

Calculate the thermal energy lost by the liquid.

Worked solution & mark scheme

This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: Molecules in the hot liquid collide with the spoon

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