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McSweeney
McSweeney Ch. 25 Vocab.
| Question | Answer |
|---|---|
| 1.An oscillation, or repeating back-and-forth motion, about an equilibrium position. | Vibration |
| 2.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. | Wave |
| 3.The time required to complete a single cycle. | Period |
| 4.The back-and-forth vibratory motion of a swinging pendulum. | Simple Harmonic Motion |
| 5.A curve whose shape represents the crests and troughs of a wave. | Sine Curve |
| 6.One of the places in a wave where the wave is highest or the disturbance is greatest. | Crest |
| 7.One of the places in a wave where the wave is lowest, or the disturbance is greatest, in the opposite direction from a crest. | Trough |
| 8.The distance from the midpoint to the crest or the midpoint to the trough. | Amplitude |
| 9.The distance from the top of the crest of a wave to the top of the following crest, or equivalently, the distance between successive identical parts of the wave. | Wavelength |
| 10.The number of events per time; measured in hertz; inverse of period. | Frequency |
| 11.The SI unit of frequency. One hertz(Hz) is one cycle per second. | Hertz |
| 12.A wave with vibration at right angles to the direction the wave is traveling. | Transverse Wave |
| 13.A wave in which the vibration is in the same direction as that in which the wave is traveling. | Longitudinal Wave |
| 14.A pattern formed by the overlapping of two or more waves that arrive in a region at the same time. | Interference Pattern |
| 15.Addition of two or more waves when wave crests overlap to produce a resulting wave of increased amplitude. | Constructive Interference |
| 16.Combination of waves where crests of one wave overlap troughs of another, resulting in a wave of decreased amplitude. | Destructive Interference |
| 17.Term applied to two waves for which the crest of one wave arrives at a point at the same time that a trough of the second wave arrives. Their effects cancel each other. | Out of Phase |
| 18.Term applied to two or more waves whose crests and troughs arrive at a place at the same time, so that their effects reinforce each other. | In Phase |
| 19.Wave in which parts of the wave remain stationary and the wave appears not to be traveling. | Standing Wave |
| 20.Any part of a standing wave that remains stationary. | Node |
| 21.The positions on a standing wave where the largest amplitudes occur. | Antinodes |
| 22.The apparent change in frequency of a wave due to the motion of the source or of the receiver. | Doppler Effect |
| 23.An increase in the measured frequency of light from an approaching source. | Blue Shift |
| 24.A decrease in the measured frequency of light from a receding source. | Red Shift |
| 25.The V-shaped wave produced by an object moving on a liquid surface faster than the wave speed. | Bow Wave |
| 26.A cone-shaped wave produced by an object moving at supersonic speed through a fluid. | Shock Wave |
| 27.The sharp crack heard when the shock wave that sweeps behind a supersonic aircraft reaches the listener. | Sonic Boom |
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mcsweeney
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