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  • 2 boys play tin can telephone with each other outside at a park
    Rights: stylephotographs, 123RF Ltd Published 16 August 2021 Size: 430 KB Referencing Hub media

    Sound is a form of energy. To create sound, you need an input of energy in the form of movement. Striking, scraping or blowing into an object makes it vibrate. These changes in pressure create waves of vibrations that move both the object and the substance surrounding it – usually air. If the vibrations reach our ears, we hear a sound. If there is no movement, no vibrations are created and no sound is made.

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