11 terms

chapter 21

STUDY
PLAY

Terms in this set (...)

pitch
depends on the frequency of a sound wave; measures how high or low a sound is perceived
Doppler effect
change in frequency of a sound wave when the source or observer is moving
loudness
extent to which a sound can be heard
Decibel
the most common unit to measure loudness symbol is dB
echo
the bouncing back of a sound wave after striking a barrier
Echolocation
using reflected sound waves to find objects
interference
combination of two or more waves into one wave
sonic boom
loud boom caused by an object traveling faster than the speed of sound
Standing wave
pattern of vibrations that look like a wave that is standing still
resonance
when a vibrating object causes a second object to vibrate
medium
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