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Learning objective

Define an echo as the sound that is reflected back after hitting a surface.

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  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE Combined ScienceWavesCore content

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Define an echo as the sound that is reflected back after hitting a surface

  • This point belongs to Sound, especially Sound outcomes.
  • You need to be able to define an echo as the sound that is reflected back after hitting a surface.
  • The key ideas to know are Describe.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

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Describe

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Paper 3Theory (Core)4 marks

Description

Echoes in Different Environments

Consider how echoes are experienced in different settings such as mountains, canyons, and urban areas. Discuss the factors that influence the clarity and timing of echoes in these environments.

  1. a

    Discuss the factors that affect the clarity and timing of echoes in canyons compared to urban areas.

    Aim for approximately 4 distinct marking points.

    [4]
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