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How is loudness measured?
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Loudness depends on the amount of energy carried by a sound wave. The loudness of sound is measured in decibels (dB). Sounds louder than 120dB can damage the ears. Sounds louder than 130dB cause pain. Some animals, like bats, make sounds that we cannot hear at all.
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Previous:
Back
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Book:
Best Ever Q&A
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Section:
Science & Technology
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Chapter:
Sound
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