What Is Sound?: Sound

Sound is a form of energy created by vibrating matter. It travels through different mediums such as air, liquids, and solids. In air, sound can be heard when a guitar string is plucked. In liquids, whales communicate over long distances. Sound also travels through solids, like when knocking on a door. However, in space, sound cannot travel due to the lack of a medium.

What is sound energy and how is it produced?

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What happens to a guitar string when it is plucked?

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How do whales communicate through water?

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Explain how sound travels through different mediums.

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Why is there no sound in space?

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