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Cambridge IGCSE Environmental Management practice

What is the main cause of smog in urban areas?

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MCQ

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cambridge_mcq

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Topic

Atmospheric pollution and its causes

Exam-style question

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What is the main cause of smog in urban areas?.

  1. A.Volatile organic compounds from vehicles and industry
  2. B.Chlorofluorocarbons (CFCs)
  3. C.Methane emissions from agriculture
  4. D.Water vapor in the atmosphere

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Paper 1 structured question: Atmospheric pollution and its causes

Paper 1Theory2 marks

Description

Smog and Temperature Inversion

Smog is a type of air pollution formed when volatile organic compounds (VOCs) from industrial activities and vehicle emissions react with sunlight. Temperature inversion occurs when a layer of warm air traps cooler air near the ground, preventing pollutants from dispersing.

  1. a

    Describe how temperature inversion affects smog levels in a city.

    Aim for approximately 2 distinct marking points.

    [2]