Set: Intro to physics-chapt 22

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All 23 Terms

Term Definition
acoustics the science of sound
anvil second bone in the middle ear; transmits vibrations from the hammer to the stirrup
cochlea snail, shell-shaped, liquid filled structure in the inner ear; contains nerve fibers and special cells that convert movements of the liquid into electric impulses transmitted to the brain
decibel unit in which the intensity of sound is measured
Doppler Effect change in frequency and pitch of a sound that occurs because of the movement of the sound source or listener
ear canal located between outer ear and eardrum, conducts sound waves into the ear
eardrum tightly stretched membrane located at the end of the ear canal that vibrates when struck by sound waves
fundamental tone tone with the lowest possible frequency and pitch; occurs when a string vibrates if the current becomes too high
hammer first bone in the middle ear; picks up vibrations from the eardrum
inner ear part of the ear that contains the liquid filled cochlea; here sound vibrations are converted into electric impulses that travel through a nerve to the brain
intensity the amount of energy in a wave; determines loudness of a sound
middle ear part of the ear that contains the 3 smallest bones in the body; function is to transmit sound vibrations from the eardrum to the inner ear
natural frequency the characteristic frequency of vibration of a particular medium
outer ear part of the ear that funnels sound into the ear canal
overtone sounds of higher frequencies produced when sections of a string vibrate
pitch how high or low a sound is
quality property of a sound that is determined by the blendings of its fundamental tone with its overtones
resonance ability of an object to vibrate when it absorbs energy of its own natural frequency
reverberation combination of reflected sound waves
sonar SOund Navigation And Ranging system that uses high frequency ultrasonic waves
stirrup one of the three bones in the middle ear
timbre quality of a sound
ultrasound sounds with frequencies higher than 20,000 hertz

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Terms 23
Creator dhoj
Created February 18, 2008
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