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new book 1-3

QuestionAnswer
wave The disturbance that transfers energy from place to place
energy The ability to do work or cause changes
medium The material through which a wave travels
mechanical wave A wave that requires a medium through which to travel
vibration A repeated back-and-forth or up-and-down motion
transverse wave A wave that moves the medium at right angels to the direction in which the wave travels
crest The highest part of a transverse wave
trough The lowest part of a transverse wave
longitudinal wave A wave that moves the medium in a direction parallel to the direction in which the waves travel
compression The part of a longitudinal wave where the particles of the medium are closed together
rarefaction The part of a longitudinal wave where the particles of the medium are far apart
amplitude The height of a transverse wave from the center to a crest or a trough
wavelength The distance between the crest of one wave and the crest of the next wave
frequency The number of waves passing a given point each second
hertz Unit of measurement for frequency
reflection The bouncing back of an object or a wave when it hits a surface through which it can not pass
refraction The bending of waves as they enter a new medium at an angle, caused by a change in speed
diffraction The bending or spreading of waves as they move around a barrier or pass through an opening
interference The interaction between waves that meet
constructive interference The interference that occurs when two waves combine to make a wave with an amplitude larger than the amplitude of either of the individual waves
destructive interference The interference that occurs when two waves combine to make a wave with an amplitude smaller than the amplitude of either of the individual waves
standing wave A wave that appears to stand in one place, even though it is two waves interfering as they pass through each other
node A point of zero amplitude on a standing wave
antinode A point of maximum amplitude on a standing wave
resonance The increase in the amplitude of a vibration that occurs when external vibrations match an object's natural frequency
Created by: czgheib1
 

 



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