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Sound Vocabulary

Science 8 Chap 16 Vocabulary

TermDefinition
sound a type of wave that is produced by a vibrating object and that travels through matter
vibration a rapid, back and forth motion
vacuum a space containing few or no particles of matter
pitch how high or low a sound is
hertz the unit used to measure frequency (one hertz = one complete cycle/s)
ultrasound sound waves with frequencies about 20,000 hertz
resonance the strengthening of a sound wave when it combines with an object's natural vibration
Doppler effect the change in perceived pitch that occurs when the source of the one who hears the sound is moving
intensity the amount of energy of a wave, per wavelength
decibel unit used to measure the intensity of a sound wave
amplification the strengthening of an electrical signal often used to increase the intensity of a sound wave
acoustics the scientific study of sound - the behavior of sound waves inside a space
echolocation the sending out of high-pitched sound waves and the interpretation of the returning echoes
sonar instruments that use echolocation to locate objects underwater
Created by: kjbutler