What is sound?

Front

What is sound?

Back

Sound is a form of energy that travels in waves and can be heard when it reaches a person's or animal's ear.

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What is the Doppler effect?

Back

The Doppler effect is the change in pitch or frequency of a sound wave as the source of the sound moves relative to an observer.

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How do sound waves travel?

Back

Sound waves travel in waves away from the object that produces the sound.

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What are sound waves made of?

Back

Sound waves are made of vibrations that travel through a medium, such as air, water, or solids.

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What type of wave are sound waves?

Back

Sound waves are longitudinal waves, meaning the vibrations move in the same direction as the wave.

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What is a medium in the context of sound?

Back

A medium is a substance through which sound waves can travel, such as air, water, or solid materials.

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Can sound travel in a vacuum?

Back

No, sound cannot travel in a vacuum because there are no particles to carry the sound waves.

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What is pitch?

Back

Pitch is the perceived frequency of a sound; it determines how high or low a sound seems.

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What is volume?

Back

Volume is the loudness or softness of a sound, which is determined by the amplitude of the sound wave.

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What is frequency?

Back

Frequency is the number of waves that pass a point in one second, measured in Hertz (Hz).