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23 Cards in this Set
- Front
- Back
Linear Motion
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A motion that goes from one place to another without repeating.
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Harmonic Motion
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Motion that repeats in cycles.
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Cycle
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A unit of motion that repeats.
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Pendulum
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A device that swings back and forth due to the force of gravity.
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Oscillator
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A physical system that has repeating cycles.
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Restoring Force
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Any force that always acts to pull a system back toward equilibrium.
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Period
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The time it takes for each complete cycle.
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Frequency
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How often something repeats, expressed in hertz.
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Hertz
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The unit of frequency. One hertz is 1 cycle per second.
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Amplitude
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the amount that a cycle moves away from equilibrium.
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Natural Frequency
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The frequency at which a system oscillates when disturbed.
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Periodic Force
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A repetitive froce.
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Resonance
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An exceptionally large amplitude that develops when a periodic force is applied at the natural frequency.
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Wave
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A traveling oscillation that has properties of frequency, wavelength, and amplitude
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Wavelength
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The distance from any point on a wave to the same point on the next cycle of the wave.
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Transverse
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A wave is transverse if its oscillations are not in the direction it moves.
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Longitudinal
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A wave is longitudinal if its oscillations are in the direction it moves.
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Constructive interference
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When waves add up to make a larger amplitude.
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Destructive interference
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When waves add up to make a smaller, or zero, amplitude.
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Pitch
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The perception of high or low that you hear at different frequencies of sound.
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Decibel
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Measure of the loudness (amplitude) of sound.
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Supersonic
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Faster than the speed of sound.
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Doppler Effect
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An increase or decreasse in frequency caused by the motion of a source of sound.
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