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15 Cards in this Set
- Front
- Back
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Define transverse wave
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A wave in which the oscillations are perpendicular to the direction of the wave travels.
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Define Longitudinal wave
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back and forth
A wave in which the oscilations are along the direction the wave travels. |
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Frequency do to waves
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number of cycles of a wave passing a point per unit time. number of cycles/secs
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Define wavelength
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Distance between two successive "like" points on a wave.
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Define Reflection
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a wave is reflected whenever it reaches a boundary of its medium or encounters an abrupt change in the properties of its medium.
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Define diffraction.
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When sound wave go through an opening like a door it not only goes straight out the door but both sides
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Define interference
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when two continuous waves, of sameamplitude and frequency arrive at the same place.
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Define Doppler effect
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If the sound is coming to you it gets louder if going away it gets softer.
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Define Shock waves
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When wavefronts "pile up" in te forward direction and form a large-ampllitue wave pulse. like the V shape behind a boat.
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Define compressions
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the regions where the coils are squeezed together are called compressions and where they are spread apart are called expansions or rarefactions.
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Define Ultrasound
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sound that is above 20,000 hertz
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Define pure tones
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A sound with a sinusoidal waveform. like a tuning fork.
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Define Complex tone
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is a complex sound wave. repeats it self but is not sinusoidal. like music notes
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Define Noise
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Random waveform that does not repeat over and over. like the sound of rushing air.
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Give an Example of a wavelenth that does not need a medium in which to travel and a wave that does need a medium.
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Water ripples and waves on a rope need a medium and light radio waves microwaves and x rays do not require a medium.
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