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20 Cards in this Set
- Front
- Back
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WAVE
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A travelling disturbance which carries energy. Mechanical waves require a medium
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TRANSVERSE WAVE
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A wave which is perpendicular to the direction of propagation of the wave
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LONGINTUDNAL WAVE
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A wave which is parallel to the direction of propagation of the wave
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PERIODIC WAVE
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A wave disturbance repeated continuously by the source
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AMPLITUDE
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The maximum excursion of a particle of the wave medium from its undisturbed state.
(The highest point of a wave on the graph, or lowest. Describes maximum disturbance.) |
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WAVELENGTH
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The length along a wave between two equivalent points
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PERIOD (T)
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The time taken for one wave to travel one wavelength
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FREQUENCY
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The number of wavelengths per second which pass a given point
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SPEED OF WAVE
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Product of wavelength and frequency
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CONDENSATION
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A region of slightly increased air pressure produced by a vibrating source
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RAREFACTION
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Region of slightly reduced air pressure immediately following condensation
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FREQUENCY OF A SOUND WAVE
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Number of cycles per second that pass a given location
(CYCLE= one condensation+one rarefaction) |
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PURE TONE
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A sound containing a single frequency
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PITCH
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A subjective quality related to frequency of sound detected by human ear
High pitch=High frequency Low pitch=Low frequnency |
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PRESSURE AMPLITUDE
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Maximum amount of change in pressure produced by a sound wave
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LOUDNESS
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Subjective quality related to pressure amplitude
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SOUND INTENSITY
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Sound power per unit area that passes perpendicularly through a surface
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THRESHOLD OF HEARING
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Smallest sound intensity the human ear can detect
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INTENSITY LEVEL
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Related to sound intensity and some reference intensity level.
Measured in Decibels. |
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DOPPLER EFFECT
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The perceived change in frequency due to the relative motion of either the source or the observer.
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