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Waves
Test Description: 25.7-25.9
Instructions: Answer all questions to get your test result.
1) When two or more waves are at the same place at the same time, the resulting effect is called
A
a standing wave.
B
a shock wave.
C
the Doppler effect.
D
interference.
2) When two waves are "in phase" what type of interference are they experiencing?
A
constructive
B
destructive
3) When the crest of one wave overlaps the trough of another, which type of interference occurs?
A
destructive
B
constructive
4) Standing waves occur because of
A
frequency
B
interference
C
wavelength
D
wave speed
5) At the antinodes of a standing wave, what type of interference is occuring?
A
destructive
B
constructive
C
none
6) Nodes in a standing wave normally remain stationary.
A
False
B
True
7) The Doppler effect is the change in observed frequency due to
A
the medium through which the wave travels.
B
the type of wave.
C
Both the motion of the source and the medium.
D
the motion of the source.
8) As a sound source (such as an ambulance) moves toward you, the pitch of the sound
A
decreases
B
does not change
C
increases
9) Blue shift and red shift refer to how the Doppler effect can affect which type of wave?
A
sound
B
light
C
longitudinal
D
water
10) If a star is experiencing red shift, it is moving
A
away from us.
B
toward us.
*select an answer for all questions
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