Cambridge IGCSE Combined Science practice

Paper 4 structured question: Transfer of thermal energy

Try the question first, then check the answer and practise the same topic again.

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Paper

Marks

Topic

Transfer of thermal energy

Exam-style question

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Paper 4Theory (Extended)3 marks

The role of greenhouse gases in temperature regulation.

Description

Greenhouse gases trap heat in the atmosphere, affecting the Earth's temperature.

a
Discuss the impact of greenhouse gases on the Earth's temperature.
Your answer
Aim for approximately 3 distinct marking points.
[3]

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Paper 4Theory (Extended)3 marks

Description

The Earth absorbs solar radiation and emits infrared radiation. Greenhouse gases can affect this balance.

a
Explain how the balance of absorbed and emitted radiation affects the Earth's temperature.
Your answer
Aim for approximately 3 distinct marking points.
[3]