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Properties of Sound Waves

Properties of Sound Waves

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Tags: science   physics   rst.6-8.4   rst.9-10.4   rst.11-12.4   high school   ngss   hs-ps4-1   ps4-1   hs-ps4-3   ps4-3  

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Sound wave
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a repeating pattern of disturbance caused by the movement of energy through a medium
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Mechanical wave
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a wave that requires a medium in order to transport its energy from one place to another
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Longitudinal wave (also called compression wave)
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a type of mechanical wave that displaces the particles of a medium in the direction of its path
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Crest
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the point on a wave with the maximum upward displacement from rest; corresponds to compression
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Trough
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the point on a wave with the maximum downward displacement from rest; corresponds to a rarefaction
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Amplitude
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the maximum disturbance of a medium, measured from the position of equilibrium
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Compression
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high pressure, high density region where particles of a medium are pushed together by a wave
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Rarefaction
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low pressure, low density region where particles of a medium are pulled apart by a wave
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Pitch
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the sensation of the frequency of a sound wave
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Wavelength
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the distance of one complete cycle of a wave
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Frequency
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the number of waves that pass a certain point in each second; perceived by the ear as pitch
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Period
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the time required for one complete cycle of a wave to pass a certain point
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Oscillation
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a periodic variation in magnitude or position around a central point
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Intensity
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a property of sound determined by amplitude and perceived by the ear as loudness
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Medium
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a substance or material characterized by interacting particles of matter that can carry a wave
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