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Chapter2-Unit C

QuestionAnswer
sound a wave that travels through matter, produced by a vibrating object
ultrasound sound waves in the range above 20,000 hertz
amplification the increasing of the strength of an electrical signal
vibration a rapid, back and forth motion
decibel the unit that measures sound intensity
resonance the strengthening of a sound wave when it combines with an object's natural vibration
acoustics the scientific study of sound
vacuum an empty space with no or very few particles
Doppler effect the change in observed pitch that occurs when the source or the receiver of a sound is moving
echolocation sending out ultrasound waves and interpreting the returning sound
pitch the quality of the highness or lowness of a sound
intensity the amount of energy in a sound wave
sonar instruments that use echolation to location objects
hertz one complete wavelength per second, or the unit for measuring frequency
Created by: jenn026lk
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