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PS - Sound (Ch. 16)

PS - Sound (Ch. 16) - Prentice Hall Science Explorer

TermDefinition
echo a reflected sound wave
elasticity the ability of a material to bounce back after being disturbed
density the ratio of a mass of a substance to its volume
loudness perception of the energy of a sound
intensity the amount of energy per second carried through a unit of area by a wave
decibel (dB) a unit used to compare the loudness of different sounds
pitch perception of the frequency of a sound
ultrasound sound waves with frequencies above 20,000 Hz
infrasound sound waves with frequecncies below 20 Hz
larynx two folds of tissue that make up the human voice box
Doppler effect the change in frequency of a wave as its source moves in relation to an observer
music a set of tones and overtones combined in ways that are pleasing
fundamental tone the lowest natural frequency of an object
overtone a natural frequency that is a multiple of the fundamental tone's frequency
acoustics the study of how sounds interact with each other and the environment
reverberation the echoes of a sound that are heard after a sound source stops producing sound waves
ear canal a narrow region leading from the outside of the human ear to the eardrum
eardrum a small, tightly stretched, drumlike membrane in the ear
cochlea a fluid-filled cavity in the inner ear that is shaped like a snail shell
echolocation the use of reflected sound waves to determine distances or to locate objects
sonar a system that uses reflected sound waves to detect and locate objects underwater
sonogram an image formed using reflected ultrasound waves
Created by: mwhite5
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