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Cambridge IGCSE Combined Science practice

Paper 4 structured question: Air quality and climate

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4

Paper

3

Marks

Topic

Air quality and climate

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Paper 4Theory (Extended)3 marks

Understanding the impact of human activities on greenhouse gas concentrations is essential for addressing climate change.

Description

Human Impact on Greenhouse Gases

Human activities such as burning fossil fuels and deforestation increase the concentration of greenhouse gases in the atmosphere.

  1. a

    Explain How do human activities contribute to the greenhouse effect?

    Aim for approximately 3 distinct marking points.

    [3]

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Paper 4 structured question: Air quality and climate

Paper 4Theory (Extended)3 marks

Description

Greenhouse Gases and Their Effects

Greenhouse gases like carbon dioxide and methane absorb thermal energy from the Earth and emit it back, contributing to the greenhouse effect.

  1. a

    Analyse Discuss how greenhouse gases contribute to global warming.

    Aim for approximately 3 distinct marking points.

    [3]