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25 Cards in this Set
- Front
- Back
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the distance from the midpoint to the crest of a wave or equivalently from midpoint to the trough.
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amplitude
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the positions on a standing wave where the largest amplitudes occur.
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antinodes
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an increase in the measured frequency of light form an approaching source.
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blue shift
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the v-shaped wave produced by an object moving on a liquid surface faster than the wave speed.
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bow wave
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addition of two or more waves when wave crests overlap to produce a resulting wave of increased amplitude.
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constructive interference
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the change in frequency of a wave due to the motion of the source or of the receiver.
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doppler effect
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# of events per time; measured in Hertz. (inverse of period)
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frequency #
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the SI unit of frequency, one hertz = 1 vibration per second.
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hertz
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2 or more waves whose crests (and troughs) arrive at a place at the same time, so that their effects reinforce each other.
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in-phase
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formed by the overlapping of two or more waves that arrive in a region at the same time.
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interference pattern
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a wave in which the vibration is in the same direction as that in which the wave is traveling rather than at right angles to it.
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longitudinal wave
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any part of a standing wave that remains stationary.
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node
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two waves for which the crest of one wave arrives at a point at the same time that a trough of the 2nd wave arrives. their effects cancel each other.
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out of phase
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time required for a pendulum to make 1 to-and-from swing. time to make a complete cycle.
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period
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decrease in the measured frequency of light (or other radiation) from a receding source.
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red shift
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a cone-shaped wave produced by an object moving at supersonic speed through a fluid
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shock wave
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periodic motion in which acceleration is proportional to the distance from an equilibrium positiion and is direted toward that requilibrium position.
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simple harmonic motion
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a curve whose shape represents the crests and troughs of a wave, as traced out by a swinging pendulum that drops a trail of sand over a moving conveyer belt.
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sine curve
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the sharp crack heard when the shock wave that sweeps behind a supersonic aircraft reaches that listener.
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sonic boom
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wave in which parts of the wave remain stationary and the wave appears not to be traveling. the result of interference between an incident (original) wave and a reflected wave.
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standing wave
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a wave with vibration at right angles to the direction the wave is traveling.
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transverse wave
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one of the places in a wave where the wave is lowest, or the dirsturbance is greatest, in the opposite direction from a crest.
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trough
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an oscillation, or repeating back and forth motion, about an equilibrium position.
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vibration
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a "wiggle in space and time;" a disturbance that rpeats regularly in space and time and that is transmitted progressively from one place to the next with no actual transport of matter.
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wave
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the distance form the top of the crest of a wave to the top of the following crest; or equivalently the distance between successive identical parts of the wave.
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wavelength
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