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Practice Test
: Physic Ch. 25-28
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Matching
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natural frequency
simple harmonic motion
out of phase
shock wave
compression
forced vibration
spectroscope
minimum energy required to produce forced vibrations and to continue vibrations
pulse of compressed air in a longitudinal wave
analyzes spectrum of element
crests aligned with troughs
conical bow wave
back-and-forth vibratory motion
vibration of an object that is made to vibrate by another vibrating object nearby
Short Answer
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light year
intensity
white light
interference pattern
constructive interference (reinforcement)
Multiple Choice
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3 things that affect ocean waves
points of largest amplitudes of standing waves, halfway between nodes
allow light to pass through
magenta, yellow, cyan
wind duration, wind speed, fetch
measures light brightness
destructive interference (cancellation)
yellow
crests align with troughs and cause decreased amplitude
yellow and green
partial shadow
back-and-forth vibratory motion
midpoint
back-and-forth vibratory motion
crests lined up with crests and troughs with troughs
where light rays cannot reach, the stronger, closer light yields strongest shadow
straight dashed line
when corresponding parts of waves line up to create increased amplitude
longitudinal wave
conical bow wave
time is takes for a back and forth swing
parts of rope that remain stationary in a standing wave, results of destructive interference
motion of the medium is parallel to direction in which a wave travels
thin beam of light
beats
2 tones of slightly different frequencies sounded together, causes fluctuation of loud and soft
caused by more than one vibration existing at the same time in the same space
pulse of low pressure air in a longitudinal wave
series of lines of frequencies produced by an element
back-and-forth vibratory motion
True or False
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Doppler effect
change in frequency due to motion of the source (or reciever)
True
False
green + blue
time is takes for a back and forth swing
True
False
infrasonic
objective, amplitude squared
True
False
color mixing by subtraction
shock wave from an aircraft exceeding the speed of sound
True
False
loudness
subjective, related to intensity. greater intensity = greater loudness
True
False
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Practice Test: Physic Ch. 25-28