Sound is a form of longitudinal waves.

Sound is formed by things vibrating.

Sound can't pass through a vacuum, as it requires atoms to pass on the energy.

The Speed of Sound[edit | edit source]

The speed of sound is dependent on the material that the sound is going through. It moves faster in a solid than a liquid or a gas because the molecules are closer together, and therefore can pass on the energy quicker.

Below are a list of values for the speed of sound in various materials:

Air(at 0°C): 330 m/s

Water: 1400 m/s

Concrete: 5000 m/s

Steel: 6000 m/s

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