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20 Cards in this Set

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  • Back
Medium
the matter through which a wave travels
Mechanical wave
a wave that requires a medium through which to travel
Electromagnetic wave
a wave caused by a disturbance in electric and magnetic fields and that does not require a medium; also called a light wave
Transverse wave
a wave that causes the particles of the medium to vibrate perpendicularly to the direction the wave travels
Longitudal wave
a wave that causes the particles of the medium to vibrate paralles to the direction the wave travels
Crest
the highest point of a transverse wave
Trough
the lowest point of a transvers wave
Amplitude
the greatest distance that particles in a medium move from their normal position when a wave passes
Wavelenght
the distance between any two sucessive identical parts of a wave
period
the time required for one full wavelength to pass a certain point
Fequency
the number of vibrations that occur in a 1 s time interval
Wave speed
the speed at which a wave passes through a medium
Doppler effect
an observed change in the frequency of a wave when the source or observer is moving
Reflection
the bouncing back of a wave as it meets a surface or boundary
Diffraction
the bending of a wave as it passes an edge or an opening
Refraction
the bending of waves as the pass from one medium to another
Interference
the combination of two or more waves that exist in the same place at the same time
Constructive Interference
any interference in which waves combine so that the resulting wave is bigger that the original waves
Destructive Interference
any interference in which waves combine so that the resulting wave is smaller than the largest of the original waves
Standing wave
a wave form caused by interference that appears not to move along the medium and that shows some of the refions of no vibrations (nodes) and other regions of maximum vibration (antinodes)