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science ch. 25 voc.1

science chapter 25 vocab

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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