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Chapter 16 Vocab.

TermDefinition
Echo A reflected sound wave.
Elasticity The ability of a material to bounce back after being disturbed.
Density The ratio of the 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 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 the normal human range of hearing.
Infrasound Sounds with frequencies below the human range of hearing.
Larynx Your vocal cords are located in your voice box, or larynx.
Doppler Effect The change in frequency of a wave as its source moves in relation to an observer.
What causes a Doppler Effect? When a sound source moves, the frequency of the waves changes because the motion of the source adds to the motion of the waves.
What causes a Sonic Boom? When a shock wave releases a huge amount of energy.
Fundamental Tone The lowest natural frequency of an object.
Overtone The object's higher natural frequencies.
Acoustics The study of how sounds interact with each other and the environment.
Reverberation The echoes of a sound are heard after the sound stops producing sound waves.
Ear Canal Collects waves and directs them into a narrow region.
Ear Drum Small, tightly stretched drumlike membrane.
Cochlea A fluid-filled cavity 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 A device that uses the reflected ultrasound waves to create a picture.
Created by: Jydude911
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