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17 Cards in this Set
- Front
- Back
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What are waves?
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rhythmic disturbances that carry energy through matter or space.
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What are some examples of waves?
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Water waves, microwaves, sound waves, and radio waves
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What is a medium?
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a medium is a material through which a wave transfers energy.
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What are the two waves that can travel without medium?
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Radio waves and light waves.
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What is a transverse wave?
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The medium moves at right angles to the direction te wave travels.
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What is the highest point of a wave called?
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A crest.
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What is the lowest point of a wave called?
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A trough.
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What is a wave length?
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It is the distance between one point on one wave, and the identical point on the next wave.
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What does Amplitude mean?
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Amplitude is the distance from the crest (or trough) of a wave to the rest position of the medium. The greater the amplitude, the greater the energy.
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What is frequency expressed in?
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Hertz.
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What does Hertz stand for?
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one wave per second
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How is wave velocity calculated?
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velocity= wave length * frequency
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what is a compressional wave?
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when matter vibrates in the same direction of the wave.
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What is Rarefaction
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Where the wave is not compressed.
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What is the speed of sound?
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344 m/s at 20 C or 332 m/s at 0 C
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20 000 Hz
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Ultra sonic waves
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Loudness
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The human perseption of sound intensity.
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