Like if a clap my hands, why does the sound stop, is it molecules or particles blocking the sound waves?
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Sound waves need a medium, such as air or water, to travel through in order to be heard. If there is no medium present, such as in the vacuum of space, sound waves cannot travel and will not be heard. Additionally, certain materials, such as dense, solid objects like concrete walls or heavy curtains, can block sound waves and prevent them from traveling. This is because the sound waves are absorbed by the material, causing them to lose their energy and die out.
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