Physics 0625 · IGCSE · Transfer of thermal energy

Transfer of thermal energy — practice question

Fig. 2.1 illustrates an electric tumble dryer that dries wet clothes. The diagram labels these parts: drum, clothes, condenser, water, heating element, hot air blows into drum, cool air leaves condenser.
(a(i))[1]

State the process through which the hot air removes water from the wet clothes.

(a(ii))[2]

Describe and explain one further difference between the air leaving the condenser and the air entering it.

(b(i))[1]

Name the force that makes the clothes fall downward.

(b(ii))[1]

State the direction of the resultant force on the clothes while they are in circular motion.

(c)[1]

Suggest why using a clothesline to dry clothes in the open air is better for the environment than using an electric tumble dryer.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: Evaporation

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