Mechanical Waves and their Properties
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MULTIPLE CHOICE. Choose the one alternative that best completes the statement or
answers the question.
Study the four transverse waves shown above. Compare the properties of waves B, C,
and D to that of wave A, and complete the following four questions:
1) Compared to wave A, which wave has the same wavelength but a smaller amplitude?
a. wave B
b. wave C
c. wave D
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2) Compared to wave A, which wave has a shorter wavelength but the same amplitude?
a. wave B
b. wave C
c. wave D
3) Which wave has the same frequency as wave A?
a. wave B
b. wave C
c. wave D
4) Compared to wave A, which two waves have greater frequencies?
a. waves B and C
b. waves B and D
c. waves C and D
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5) The vibrations of a transverse wave move
a. in the same direction as the wave travels.
b. at right angles to the direction of wave travel.
c. above and below the moving wave.
d. opposite to the direction of wave travel.
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6) Compressions and rarefactions are characteristic of
a. longitudinal waves.
b. transverse waves.
c. both of these.
d. neither of these.
7) All waves have
a. amplitude.
b. frequency.
c. wavelength.
d. speed.
e. all of these.
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8) In a longitudinal wave, the compressions and rarefactions travel in
a. the same direction that the wave travels.
b. a direction opposite to the wave travel.
c. neither.
9) The amplitude of a particular wave is 1 m. The top to bottom ( crest to trough) distance
of the wave is
a. 0.5 m.
b. 1 m.
c. 2 m.
d. none of these.
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10) The distance between two consecutive crests of a wave is called the
a. amplitude
b. frequency
c. wave speed
d. wavelength
11) From Figure 2 above, which letter shows the area of compression for the sound
created by the tuning fork?
a. a.
b. b.
c. c.
d. d.
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12 The amplitude of the wave in the diagram below is given by letter ______.
a. A
b. B
c. C
d. D
e. E
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13) Indicate the interval which represents one full wavelength in the wave diagram
below.
a. A to C
b. B to D
c. A to G
d. A to E
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14). From figure 1 above, which letter shows the correct wavelength for the sound created
by the tuning fork (Look Closely)?
a. a.
b. b.
c. c.
d. d
15) The period of a pendulum depends on
a. the mass
b. the length
c. the distance it is pulled back
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d. all of the above
Short Answer – For the Questions below, show the equation used, show your
work, and include the correct units.
16) A pendulum is made with a length of 8 m.
a. What is the period of the pendulum?
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b. what is the Frequency of the pendulum?
17) How long is a pendulum that has a period of .81 s?
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18) A Wave is moving with a speed of 325 m/s. If the frequency is 798 Hz, what
is the wavelength?
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Answer Key
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Physics Unit Test­ Waves and their Properties
California State Standards 4a,b, d,e,f
Form A
Integrated Science One
Level
analysis
analysis
analysis
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comprehension
comprehension
knowledge
comprehension
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comprehension
knowledge
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comprehension
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analysis
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comprehension
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Cal Standard
P.4.b
P.4.b
P.4.b
P.4.b
P.4.d
P.4.f
P.4.f
P.4.b
P.4.d
P.4.a
P.4.a
P.4.d
P.4.b
P.4.d
P.4.b
P.4.b
P.4.f
P.4.b
P.4.b
P.4.b
P.4.b
P.4.d
P.4.b
P.4.b
P.4.d
P.4.a
P.4.d
P.4.a
ABACUS
4.1.1
4.1.1
4.1.1
4.1.1
4.1.2
4.1.1
4.1.1
4.1.1
4.1.2
4.1.1
4.1.1
4.1.2
4.1.1
4.1.2
4.1.1
4.1.1
4.1.1
4.1.1
4.1.1
4.1.1
4.1.1
4.1.2
4.1.1
4.1.1
4.1.2
4.1.1
4.1.2
4.1.1
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Answer
1.
c
2.
b
3.
c
4.
a
5.
b
6.
c
7.
d
8.
a
9.
a
10. d
11. c
12. d
13. b
14. c
15. a
16. e
17. d
18. a
19. b
20. c
21. d
22. b
23. d
24. d
25. b
26. d
27. b
28. c
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Answer:
synthesis
P.4.f
4.1.1
As the train approaches, you hear a sound with a frequency slightly
higher than the actual pitch of the train’s horn. The waves emitted by
the train’s horn travel at a fixed speed through the air. The motion of the
train squeezes the waves closer together in the forward direction,
shortening their wavelengths. The waves strike your ear with a
frequency greater than that emitted by the horn. As the train moves past
you, the wavelength of the waves increases, and as it moves away, the
waves are stretched farther apart and strike your ear at a lower
frequency. This is called the Doppler effect.
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29.
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30. Answer:
synthesis
P.4.f
4.1.1
Wave interference is the result of two or more waves combining. When
they combine in phase—that is, with crests overlapping crests and
troughs overlapping troughs—the resulting wave has greater amplitude.
This is constructive interference. When overlapping is of crest on trough,
cancellation or diminishing of the wave results. This is destructive
interference.
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