chapter 25 vocab
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| wave | A 'wiggle' in space and time; a disturbance that repeats regularly in space and time and that is transmitted progressively from one place to the next with no actual transport of matter.
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| amplitude | refers to the distance from the midpoint from the crest or trough of the wave
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| troughs | low points on a wave
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| Period | The time required for a pendulum to make one to-and-fro swing. In general, the time to complete a single cycle.
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| wavelengths | distance from the top of one crest to the top of the next one
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| vibration | a repeating back and forth motion about an equilibrium position
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| simple harmonic motion | An oscillation, or repeating back and forth motion, about equilibrium position.
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| pendulum | The weight attached to a string that is free to move back and forth in a fixed position.
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| Period | The time required for a pendulum to make one to-and-fro swing. In general, the time to complete a single cycle.
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| sine curve | A curve whose shape represents the crest and troughs of a wave, as traced out by a swing pendulum that drops a trail of sand over a moving conveyer belt.
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| crest | One of the places in a wave where the wave is highest or the disturbance is greatest.
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| hertz (Hz) | unit of frequency
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| transverse waves | whenever the motion of the medium is at right angles to the direction in which a wave travels
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| longitudinal wave | when the particles oscillate parallel to or along the direction of the wave rather than at right angles to it
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| interference pattern | is a regular arrangement of places where wave effects or increased decreased or neutralized
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| constructive interference | the crest of one wave overlaps the crest of another and their individual effects add together. The result is a wave of increased amplitude
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| destructive interference | The crest of one wave overlaps the trough of another and their individual effects are reduced. The high part of one wave fills in the low part of another. The waves cancel each other.
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| out of phase | The crest of one wave overlaps the trough of another to produce regiosn of zero amplitude
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| in phase | The crest of one wave overlaps the crest of another wave and the troughs overlap.
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| standing wave | is a wave that appears to stay in one place; it does not seem to move through the medium
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| nodes | the stationary points on a standing wave
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| anti-nodes | the position on a standing wave with the largest amplitude
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| the Doppler effect | this apparent change in frequency due to the motion of the source or receiver
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| blue shift | an increase in frequency; the increase is toward the high frequency of the spectrum
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| red shift | a decrease in frequency referring to the low frequency or end of the color spectrum
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| bow wave | the crest overlap at the edges and the pattern made by these overlapping crests is a V-shape
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| shock wave | is a three dimensional wave that consists of overlapping spears that form a cone
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| sonic boom | the sharp crack heard when the shock wave sweeps behind a supersonic aircraft that reaches the listeners
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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