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Sound

Chapter 2 UnitC

WordDefinition
Sound A wave that travels through matter, produced by a vibrating object
Ultrasound Sound waves in the ravge abouve 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 strengthing of a sound wave when it combines with an object's natural vibration
Vacuum An empty space with few, if any particles
Pitch The quality of the highness or lowness of a sound
Hertz Unit for measuring frequency and pitch; one complete wavelength per second
Doppler Effect The change in observed pitch that occurs when the source or the one who hears a sound is moving
Intensity The amount of energy a sound wave has
Acoustics The scientific study of sound
echolocation Sending out ultrasound waves and interpreting the returning sound echoes
Sonar Instruments that use echolocation to locate objects
Created by: jenn026lk
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