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Chapter 25 Review #2
Test Description: Try this second game after completing 25-1.
Instructions: Answer all questions to get your test result.
1) Some of a wave's energy is always being dissipated as heat. In time, this will reduce the wave\'s
A
amplitude
B
frequency
C
wavelength
D
speed
2) The amplitude of a particular wave is 2 m. The top-to-bottom distance of the disturbance is
A
8m
B
6m
C
4m
D
2m
3) If you double the frequency of a vibrating object, its period
A
doubles
B
doesn't change
C
quartered
D
halved
4) What happens when an airplane is flying faster than the speed of sound?
A
Nobody can hear the plane fly overhead
B
It becomes very quiet inside the plane
C
There is no sonic boom
D
A shock wave is produced
5) An observer on the ground hears a sonic boom that is created by an airplane flying at a speed
A
greater than the speed of sound
B
equal to the speed of sound
C
just below the speed of sound
D
none of the above
6) The Doppler effect occurs when a source of sound moves
A
away from you or towards you
B
away from you
C
towards you
D
none of the choices
7) Two waves arrive at the same place at the same time exactly in step with each other. Each wave has an amplitude of 2 m. The resulting wave has an amplitude of
A
3m
B
2m
C
4m
D
0m
8) The period of an ocean wave is 10 seconds. What is the wave’s frequency?
A
1 Hz
B
100 Hz
C
1/10 Hz
D
1/100 Hz
9) A weight suspended from a spring bobs up and back down again over a distance of 3m in 10 seconds. Its frequency is
A
0.10 Hz
B
10.0 Hz
C
None of the above
D
3.0 Hz
10) A skipper on a boat notices wave crests passing the anchor chain every 6 seconds. The skipper estimates the distance between crests at 30 m. What is the speed of the water waves?
A
30.0 m/s
B
6.0 m/s
C
5.0 m/s
D
not enough information
*select an answer for all questions
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