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Cambridge IGCSE Combined Science practice

Paper 3 structured question: Transfer of thermal energy

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Attempt questionTransfer of thermal energy revisionRevise the key idea

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2

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Topic

Transfer of thermal energy

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Paper 3Theory (Core)2 marks

Convection is a fundamental process in both natural and engineered systems.

Description

Convection in Nature

In the atmosphere, warm air rises and cool air sinks, leading to wind patterns and weather changes.

  1. a

    Describe the role of convection in atmospheric processes as illustrated in the stimulus.

    Aim for approximately 2 distinct marking points.

    [2]

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Paper 3 structured question: Transfer of thermal energy

Paper 3Theory (Core)3 marks

Description

Convection Process

In a pot of water being heated on a stove, the water at the bottom heats up first, becomes less dense, and rises to the top, while the cooler water at the top sinks to the bottom, creating a convection current.

  1. a

    Explain the process of convection as described in the stimulus.

    Aim for approximately 3 distinct marking points.

    [3]