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# Waves and Sound

TermDefinition
Wave transfers energy from place to place without transferring matter
Medium the matter through which sound travels
Transverse wave the wave travels perpendicular to the medium (ex. light)
Longitudinal wave the wave travels parallel to the medium (ex. sound)
Wavelength distance between two points on a wave where the wave pattern is repeated
Amplitude maximum displacement from equilibrium
Frequency the number of wavelengths in one second, expressed in a unit called Hertz or the # of cycles/ time
Period the amount of time it takes for one wave to pass or the time/cycle
Wave speed velocity = frequency x wavelength
Sound caused by waves that are picked up by your ears (longitudinal)
Speed of sound depends on the temperature and elasticity of the medium through which the sound travels
Pitch a change in frequency or wavelength
Doppler effect change in frequency due to the motion of the source
Interference occurs when two or more waves interact with each other
Standing wave A wave pattern that remains in a constant position
Node the stationary part of a standing wave
Antinode the region of maximum displacement and maximum energy
Resonance a forced vibration matches the objects natural frequency
Created by: wcscience

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