a rapid back and forth movement
vibration
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the intensity of a sound is measured in these E.G., breathing is 10 of these talking normally is 60 of these
decibels
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a vibration that can be heard
sound
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the quality of a sound that distinguishes it from other sounds of the sm p. vol.
timbre
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the distance from one compression the next in sound wave
wave length
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a sound wave that bounces back towards its source and is heard
echo
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the number of waves that pass a point in one second
frequency
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the science of a sound
acoustics
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how high or low a sound is; related to its frequency
pitch
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