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Frequency
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Determines a sound's pitch
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Transverse
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Ocean waves are this because the water and the waves move at a right angle to each other
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Rarefraction
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In a longitudinal wave, the space where there are few particles of medium are called this
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Longitudinal
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Sound is this type of wave because the medium moves back and forth in the same direction as the wave travels
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Crest
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This of a transverse wave is the highest point, or point of maximum displacement, of the wave
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Doppler effect
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Sound of an approaching train whistle increases in pitch because of the _____
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Ultrasonic
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Sounds people cannot hear
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Medium
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Sound travels through this
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Hertz
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Frequency of sound waves is measured in these units
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Compression
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The space where air particles are pushed together
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Sound wave
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Is produced by a vibration object that causes the air molecules to vibrate
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Decibels
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The intensity or loudness of a sound is measured in ______
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Amplitude
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Refers to the maximum distances medium molecules are displaced
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Trough
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Lowest displacement of a wave
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Sound
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A rocket engine produces a high wave of high ____, which registers 200 on the decibel scale
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