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Chapter 16

SOUND Vocabulary

TermDefinition
Echo Sound waves reflected off a surface. Reflected sound wave.
Elasticity The ability of a material that has been disturned to bounce back.
Density How much matter, or mass, there is in a certain amount of space available, or volume.
Loudness The description of perception of energy of a sound.
Intensity The energy a sound wave carries per second through a unit area.
Decibel(db) The loudness of different sounds being compared.
Pitch How high or low the sounds seems to a person.
Ultrasound Sounds waves with frequencies above the human range of hearing
Infrasound Sound waves with frequencies below the human range of hearing
Larnyx Where your vocal cords are located.
Doppler Effect Change in frquency of a wave as its source moves closer or farther away.
Cause and Effect of the Doppler Effect when a sound source moves, the frequency of the waves change because the motion of the soure adds to the motion of the waves.
Causes of a Sonic Boom When a shock wave releases a huge amount of energy.
Fundamental Tone The lowest natural frquency of an object.
Overtone Higher natural frequencies.
Acoustics The study of how sounds interact with eachother and the enviroment.
Reverberation Echoes of a sound wave are heard after the sound source stops producing sound waves.
Ear Canal It collects sound waves and directs them into the canal.
Ear Drum The sound waves make your eardrum vibrate, and you strike it.
Cochlea Fluid filled cavity.
Echolocation The use of reflected sound waves to determine diistances to locate objects.
Sonar A system that uses reflectedvsounds waves to detect what sunder water.
Sonogram A device that uses reflected ultrasound waves to create a picture.
Created by: ejern