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Physics B- Unit 2 Key Terms 1 Flashcards

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659931778AmplitudeThe distance from the midpoint to the maximum (crest) of a wave.
659931780AntinodesThe positions on a standing wave where the largest amplitudes occur.
659931782Blue shiftAn increase in the measured frequency of light from an approaching source
659931784Bow wavethe V-shaped wave produced by an object moving on a liquid surface faster than the wave speed.
659931786Constructive interferenceAddition of two or more waves when wave crests overlap to produce a resulting wave increased amplitude.
659931787CrestOne of the places in a wave where the wave is highest or the disturbance is greatest.
659931789Destructive interferenceCombination of waves where crests of one wave overlap troughs of another, resulting in a wave of decreased amplitude.
659931791Doppler effectThe change in frequency of a wave due to the motion of the source or of the receiver.
659931792FrequencyThe number of events per time; measured in hertz.
659931794HertzThe SI unit of frequency.
659931796In PhaseTerm applied to two or more waves whose crests and troughs arrive at a place at the same time, so that their effects reinforce each other.
659931797Interference PatternA pattern formed by the overlapping of two or more waves that arrive in a region at the same time.
659931799Longitudinal WaveA 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.
659931801NodeAny part of a standing wave that remains stationary.
659931803Out of PhaseTerm applied to two waves for which the crest of one wave arrives at a point at the same time that a trough of the second wave arrives. Their effects cancel each other
659931805PeriodThe time required for a pendulum to make one to-and-fro swing
659931807Red ShiftA decrease in the measured frequency of light (or other radiation) from a receding source
659931809Shock WaveA cone-shaped wave produced by an object moving at a supersonic speed through a fluid.
659931811Simple Harmonic MotionPeriodic motion in which acceleration is proportional to the distance from an equilibrium position and is directed toward that equilibrium position.
659931812Sine CurveA 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 conveyor belt.
659931813Sonic BoomThe sharp crack heard when the shock wave that sweeps behind a supersonic aircraft reaches the listener.
659931814Standing WaveWave in which parts of the wave remain stationary and the wave appears not to be traveling.
659931815Transverse WaveA wave with vibration at right angles to the direction the wave is traveling
659931816TroughOne of the places in a wave where the wave is lowest, or the disturbance is greatest, in the opposite direction of the crest.
659931817VibrationAn oscillation, or repeating back and forth motion about an equilibrium position.
659931818WaveA "wiggle" in space and time.
659931819WavelengthThe distance from the top of a crest of a wave to the top of the following crest.

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