Movement forwards and backwards - Vibration, Direction of energy movement sound waves - Longitudinal, Transferred by waves - Energy, Energy detected by the ears - Sound, Region where particles are close together - Compression, Region where there are no particles - Vacuum, Waves bouncing off an object - Reflected, Energy being taken into a substance - Absorbed, Method of energy transfer in light and sound - Waves, The frequency of a wave - Pitch, The pitch of a wave - Frequency, Units of frequency - Hertz,

Sound Waves

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