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Cambridge IGCSE Physics practice

Paper 3 structured question: Melting, boiling and evaporation

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Melting, boiling and evaporation

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Paper 3Theory (Core)1 marks

Understanding the cooling effect of evaporation in everyday life.

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Cooling Effect of Evaporation

When sweat evaporates from the skin, it cools the body. This is an example of how evaporation can lead to cooling.

  1. a

    State the effect of evaporation on temperature.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 3 structured question: Melting, boiling and evaporation

Paper 3Theory (Core)2 marks

Description

Evaporative Cooling Systems

Evaporative cooling systems use the principle of evaporation to cool air. As water evaporates, it absorbs heat from the air, lowering the temperature.

  1. a

    State how evaporation contributes to cooling in these systems.

    Aim for approximately 2 distinct marking points.

    [2]