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Chapter 20-SOUND

Across
Sound waves below 20 Hz.
_____ hearing for a human being is in the 20 Hz-20 kHz range.
The subjective impression about the frequency of sound is called
Process in which sound encountering a surface is returned. Also called an echo.
Sound waves are _____ waves and require a medium in which to travel.
The frequency of forced vibrations on an object matches the object's natural frequency.
Periodic variations in the loudness of sound due to interference.
Bending of waves.
The branch of physics which deals with sound.
Down
The _____ Frequency of an object is its own natural frequencies.
Sound waves are vibrations made up of _______ and rarefactions.
A _____ vibration is the setting up of vibrations in an object by a vibrating force.
The ability of a strained body to recover its shape after deformation, as from a vibration or compression.
Sound waves above 20 kHz.
The speed of sound in air is 330 meters per _______.