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Cambridge IGCSE Combined Science practice

Paper 3 structured question: Sound

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2

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Sound

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Paper 3Theory (Core)2 marks

Understanding sound propagation.

Description

Sound Wave Propagation

Sound waves require a medium to travel. They cannot propagate in a vacuum, and their speed varies depending on the medium.

  1. a

    Explain why sound cannot travel through a vacuum.

    Aim for approximately 2 distinct marking points.

    [2]

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Paper 3 structured question: Sound

Paper 3Theory (Core)3 marks

Description

Speed of Sound in Different Mediums

Sound travels at different speeds in air, water, and solids. For example, sound travels faster in water than in air, and even faster in solids like steel.

  1. a

    Compare the speed of sound in air and steel.

    Aim for approximately 3 distinct marking points.

    [3]