(a)[4]
State and explain the changes to the pieces of cork a few minutes after the heater is turned on.
(b)[1]
State the name of the process by which thermal energy is transferred in solid metals.
Physics 0625 · IGCSE · Transfer of thermal energy
Transfer of thermal energy — practice question
Fig. 5.1 illustrates two metal plates, A and B, with a radiant heater positioned halfway between them. Plate A is shiny, whereas plate B is dull black. Each plate has a piece of cork fixed to it with wax. At room temperature, the wax is solid and its melting point is 37 ^{\circ}C.
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The cork on the black plate / side B drops off before the cork on the shiny plate” …
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