Portage 7 Sound Ch. 2

14 terms by neurohrd

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Wave produced by vibrations that can travel through a medium.


Rapid back-and-forth motion.


Space with few or no particles where sound can't travel.


Highness or lowness of sound; higher frequency = higher pitch.


Unit to measure frequency.


Sound with frequency higher than 20,000 hertz.


Strengthening of a sound wave when it combines with an object's natural vibration.

Doppler effect

Change in pitch that occurs when the source or hearer is moving.


Amount of energy a sound wave has (loudness).


Unit to measure intensity of a sound wave.


Increasing the strength of an electrical signal to increase intensity (loudness) of a sound.


Scientific study of sound.


Finding location by sending out ultrasound waves and interpreting the returning echoes.


Instuments that use echolocation to locate objects under water.

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