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ch. 26

physics ch. 26 vocab

QuestionAnswer
pitch term that refers to how high or low sound frequencies appear to be. high pitch = high frequency
infransonic term applied to sound to pitch too low to be heard by the human ear that is below 20 hertz.
ultrasonic term applied to sound frequencies above 20,000 , hertz the normal upper limit of a human hearing
compression in sound , a pluse of compressed air ,opposite of rarefaction.
rarefaction a disturbance in air, when the pressure is lowered opposite of compression.
natural frequency frequency at which an elastic object, will vibrate. minimum energy required to continue vibration.
forced vibratation vibration of an object that is made to vibrate another vibrating object. sounding board.
resonance a phenomenon that occurs when frequencies of forecd vibrations matches objects natral frequency, increase in amplitude results.
beats when two tones of different frequencies are sounded together.
Created by: hkramer
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