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science ch. 25 voc.1
science chapter 25 vocab
| Question | Answer |
|---|---|
| an oscilliation, or a repeating back and forth motion about an equillibrium position | vibrations |
| a disterbance that repeats reguarlly in space and time and that is transmitted porgressivly from one place to the next with no actual transport of matter | wave |
| the time required for a pendulum to make one to and fro swing. in genneral, the time needed to complete a full cycle | period |
| the back and forth vibratary motion,of a swinging pendulum | simple harmonic motion |
| a curve whose shape represents the crests and troughs of a wave, as traced out by a swinging pendulum that drops a trail of sand over a moving convayer belt | sine curve |
| one of the places in the wave where the wave is highest or the disterbance is greatest | crest |
| any long depression or hollow, as between two ridges or waves. | trough |
| the absolute value of the maximum displacement from a zero value during one period of an oscillation. | amplitude |
| the distance, measured in the direction of propagation of a wave, between two successive points in the wave that are characterized by the same phase of oscillation. | wavelength |
| the number of cycles or completed alternations per unit time of a wave or oscillation. | frequency |
| the SI unit of frequency, equal to one cycle per second. Abbreviation: Hz | hertz |
| a wave in which the direction of displacement is perpendicular to the direction of propagation, as a surface wave of water. | transverse wave |
| a wave in which the direction of displacement is the same as the direction of propagation, as a sound wave. | longitudinal wave |
| a series of alternating dark and bright bands produced as a result of light interference. | interference pattern |
| the interference of two or more waves of equal frequency and phase, resulting in their mutual reinforcement and producing a single amplitude equal to the sum of the amplitudes of the individual waves. | constructive interference |
| term applied to two waves when the crest of one arrives at the same time that a trough of the seccond wave arrives their effects cancel each other | out of phase |
| term applied to two or more waves whose crests (and troughs)arrive at the same time, so their effects cancel each other | in phase |
| a wave in a medium in which each point on the axis of the wave has an associated constant amplitude ranging from zero at the nodes to a maximum at the antinodes. | standing wave |
| a point, line, or region in a standing wave at which there is relatively little or no vibration. | node |
| the region of maximum amplitude between two adjacent nodes in a standing wave. | antinodes |
| the shift in frequency by a source moving relative to an observer as perceived by the observer shift is to higher frequencies when the source approaches and to lower frequencies when it recedes. | doppler effect |
| increase in the measured frequency of light from an approaching sorce called the blue shift because the apperent increase is towards the high frequency, or red end of the color spectrum | blue shift |
| decrease in measured frequency of light from a recceding source called red shift because of the decrease is towards the low frequency or red end of spectrum | red shift |
| a type of shock wave formed in front of a body moving at supersonic speed. | bow wave |
| A large-amplitude wave formed by the sudden compression of the medium through which the wave moves. Shock waves can be caused by explosions or by objects moving through a fluid at a speed greater than the speed of sound. | shock wave |
| A shock wave of compressed air caused by an aircraft traveling faster than the speed of sound. It is often audible as a loud, explosive sound, and it sometimes causes damage to structures on the ground. | sonic boom |
Created by:
tenderle14
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