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GHS - PSCP - 17

Vocabulary for Mechanical Waves

TermDefinition
mechanical wave disturbance in matter that transfers energy
medium material that carries a mechanical wave
crest high point of a wave
trough low point of a wave
transverse wave medium moves perpendicular to the wave travel
longitudinal wave medium moves parallel to the wave travel
compression where the medium is pushed together
rarefaction where the medium is spread apart
surface wave wave along the interface between 2 media
periodic motion repeats at regular intervals
period the time for a complete motion
frequency the number of cycles per time
hertz SI unit for frequency
wavelength distance between the same part of two consecutive waves
amplitude maximum displacement of a medium
reflection wave bounces off of a medium it cannot enter
refraction wave changes speed and direction when entering a new medium
diffraction wave spreads as it passes an opening or obstruction
interference waves overlap and combine together
constructive interference waves combine to form a larger wave
destructive interference waves combine to form a smaller wave
standing wave wave that appears to not move
node area of no displacement in a standing wave
antinode area of maximum displacement in a standing wave
sound waves a longitudinal wave traveling through a medium
intensity amount of energy carried by a sound wave
decibel SI unit for intensity
loudness physical response of sound intensity
pitch perception of sound frequency
sonar technique to determine distance using sound waves
Doppler effect change in sound frequency due to relative motion
resonance response of two standing waves of the same frequency
Created by: dbertelsen
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