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Cambridge IGCSE Physics practice

Paper 3 structured question: Sound

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Sound

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Paper 3Theory (Core)1 marks

Understanding the speed of sound in different conditions.

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Speed of Sound in Air

The speed of sound varies with temperature and humidity. Under normal conditions, it is approximately 330 to 350 m/s.

  1. a

    State the approximate speed of sound in air under normal conditions.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 3 structured question: Sound

Paper 3Theory (Core)1 marks

Description

Temperature and Sound Speed

As temperature increases, the speed of sound in air also increases. This is due to the increased energy of air molecules.

  1. a

    State how the speed of sound changes with temperature.

    Aim for approximately 1 distinct marking point.

    [1]