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36 Cards in this Set

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 periodic disturbance in a solid, liquid, or gas as energy is transmitted through a medium wave a physical environment in which a wave travels medium examples of waves that need a medium, or media sound waves, earthquake waves, and water waves waves that don't need a medium to travel through electromagnetic waves examples of electromagnetic waves visible light, microwaves, TV and radio waves, and X rays particles vibrate perpendicular to the direction the wave is traveling transverse wave particles vibrate back and forth along the path that the wave moves longitudinal waves made of crests and troughs transverse waves made of compressions and rarefractions longitudinal waves how high or low the wave is from its rest position amplitude higher ___ carries more energy than small ___ amplitude the space between two crests or two troughs wave lengths the # of waves produced in a given amount of time frequency shorter ____ carry more energy than longer ___ wave lengths measured in hertz, Hz, (1 Hz = 1 wave per second frequency if ___ are =, high ____ waves carry more energy than low ____ waves amplitude; frequency speed at which a wave travels wave speed frequency and wave length are ____ related; if one is doubled, the other is cut in 1/2 inversely the wave speed in a ___ ____ is the same no matter what the wave legth is certain medium happens when a wave bounces back after hitting a barrier reflection the bending of a wave as the wave passes from one medium to another at an angle; causes rainbows refaction the bending of waves around a barrier or through an opening diffraction amount of _____ depends on wave length and the size of the barrier or opening diffraction result of two or more waves overlapping interference a crest will overlap a crest, trough overlap a trough, when they combine they form a new wave with a larger amplitude condtructive interference crest of one wave overlaps a trough of another wave and the new wave formed is smaller destructive interference looks like it's standing still but it's actually going in both directions standing wave happens when a vibrating at or near the resonance frequency of a 2nd object makes the 2nd object vibrate resonance the speed of ___ depends on the medium; and tempature affects also affects it sound how low or high the sound seems to be pitch ___ is related to the frequency of sound waves pitch high ___ = high frequency low ___ = low frequency pitch apparent change in the frequency of a sound caused by the motion of the listener or the source of the sound dopper effect the larger the ____, the louder the sound amplitude the most common unit to express loudness is decibel (dB) reflected sound wave echo