1. A change in the speed of a wave as it enters a new
medium produces a change in
A) frequency
C) wavelength
B) period
D) phase
5. The diagram below represents a transverse water wave
propagating toward the left. A cork is floating on the
waters surface at point P.
2. The diagram below represents wave fronts traveling
from medium X into medium Y.
In which direction will the cork move as the wave passes
point P?
All points on any one wave front shown must be
A)
B)
C)
D)
traveling with the same speed
traveling in the same medium
in phase
superposed
3. What happens to the frequency and the speed of an
electromagnetic wave as it passes from air into glass?
A) The frequency decreases and the speed increases.
B) The frequency increases and the speed decreases.
C) The frequency remains the same and the speed
increases.
D) The frequency remains the same and the speed
decreases.
4. The energy of a sound wave is most closely related to its
A) period
C) frequency
B) amplitude
D) wavelength
A)
B)
C)
D)
up, then down, then up
down, then up, then down
left, then right, then left
right, then left, then right
6. Transverse waves are to radio waves as longitudinal
waves are to
A) light waves
C) ultraviolet waves
B) microwaves
D) sound waves
Base your answers to questions 7 through 9 on the information and diagram below.
A longitudinal wave moves to the right through a uniform medium, as shown below.
Point A, B, C, D, and E represent the positions of particles of the medium
7. The energy of this wave is related to its
A) amplitude
B) period
C) speed
D) wavelength
8. The wavelength of this wave is equal to the distance between points
A) A and B
B) A and C
C) B and C
D) B and E
9. Which diagram best represents the motion of the particle at position C as the wave moves to the right?
A)
B)
C)
10. Base your answer to the following question on the
diagram of a Slinky spring shown below.
The interval representing one wavelength is
A) AB
B) AC
C) AD
D) AE
11. A physics student takes her pulse and determines that
her heart beats periodically 60 times in 60 seconds. The
period of her heartbeat is
A) 1 Hz
B) 60 Hz C) 1 s
D) 60 s
12. While sitting in a boat, a fisherman observes that two
complete waves pass by his position every 4 seconds.
What is the period of these waves?
A) 0.5 s
B) 2 s
C) 8 s
D) 4 s
D)
13. Base your answer to the following question on
the diagram below which represents waves generated in
a spring.
What is the frequency of the waves if it takes 5.0
seconds to generate 10 compressions?
A) 0.50 cycles/sec
C) 10. cycles/sec
B) 2.0 cycles/sec
D) 50. cycles/sec
14. The graph below represents the displacement of a point
in a medium as a function of time as a wave passes
through the medium.
What is the frequency of the wave?
A) 1/2 Hz
C) 1/4 Hz
B) 2 Hz
D) 4 Hz
15. The periodic wave in the diagram below has a
frequency of 40. hertz.
18. Waves are traveling with a speed of three meters per
second toward P as shown in the diagram.
If three crests pass P in one second, the wavelength is
A) 1 m
B) 6 m
C) 3 m
D) 9 m
19. A car’s horn produces a sound wave of constant
frequency. As the car speeds up going away from a
stationary spectator, the sound wave detected by the
spectator
A) decreases in amplitude and decreases in
frequency
B) decreases in amplitude and increases in frequency
C) increases in amplitude and decreases in frequency
D) increases in amplitude and increases in frequency
What is the speed of the wave?
A) 13 m/s
C) 60. m/s
B) 27 m/s
D) 120 m/s
16. Which equation correctly relates the speed v,
wavelength , and period T of a periodic wave?
A) v = T
B) v = T
C) v =
T
2
D) v =
T
17. What is the velocity of a wave having a frequency of 25
cycles per second and a wavelength of 10 meters?
A) 2.5 m/s
C) 35 m/s
B) 15 m/s
D) 250 m/s
20. A train sounds a whistle of constant frequency as it
leaves the train station. Compared to the sound emitted
by the whistle, the sound that the passengers standing
on the platform hear has a frequency that is
A) lower, because the sound-wave fronts reach the
platform at a frequency lower than the
frequency at which they are produced
B) lower, because the sound-wave travels more
slowly in the still air above the platform than in
the rushing air near the train
C) higher, because the sound-wave fronts reach the
platform at a frequency higher than the frequency
at which they are produced
D) higher, because the sound-wave travels faster in
the still air above the platform than in the rushing
air near the train
21. What is characteristic of both sound waves and
electromagnetic waves?
A)
B)
C)
D)
They require a medium.
They transfer energy.
They are mechanical waves.
They are longitudinal waves.
22. Which statement describes a characteristics common to
all electromagnetic waves and mechanical waves?
27. The diagram below shows a standing wave in a string
clamped at each end.
A) Both types of waves travel at the same speed.
B) Both types of waves require a material medium for
propagation.
C) Both types of waves propagate in a vacuum.
D) Both types of waves transfer energy.
23. If the frequency of a sound wave in air at STP remains
constant, its energy can be varied by changing its
A) amplitude
C) wavelength
B) speed
D) period
24. Waves transfer energy between two points with no
transfer of
A) work
C) mass
B) momentum
D) force
25. The diagram below represents two pulses approaching
each other from opposite directions in the same
medium.
What is the total number of nodes and antinodes in the
standing wave?
A)
B)
C)
D)
3 nodes and 2 antinodes
2 nodes and 3 antinodes
5 nodes and 4 antinodes
4 nodes and 5 antinodes
28. While playing, two children create a standing wave in a
rope, as shown in the diagram below. A third child
participates by jumping the rope.
Which diagram best represents the medium after the
pulses have passed through each other?
A)
What is the wavelength of this standing wave?
A) 2.15 m
C) 6.45 m
B)
29. The superposition of two waves traveling in the same
medium produces a standing wave pattern if the two
waves have
C)
D)
26. Which phrase best describes a periodic wave?
A)
B)
C)
D)
B) 4.30 m
D) 8.60 m
a single pulse traveling at constant speed
a series of pulses at irregular intervals
a series of pulses at regular intervals
a single pulse traveling at different speeds in the
same medium
A) the same frequency, the same amplitude, and
travel in the same direction
B) the same frequency, the same amplitude, and
travel in opposite directions
C) the same frequency, different amplitudes, and
travel in the same direction
D) the same frequency, different amplitudes, and
travel in opposite directions
30. The diagram below represents a light ray reflecting
from a plane mirror.
The angle of reflection for the light ray is
A) 25°
B) 35°
C) 50.°
D) 65°
Answer Key
waves review 15
1.
C
2.
C
3.
D
4.
B
5.
B
6.
D
7.
A
8.
B
9.
D
10.
B
11.
C
12.
B
13.
B
14.
B
15.
C
16.
C
17.
D
18.
A
19.
A
20.
A
21.
B
22.
D
23.
A
24.
C
25.
B
26.
C
27.
C
28.
D
29.
B
30.
A
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A) frequency B) period C) wavelength D) phase 1. A change in the