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ID: A
Chapter 23 Multiple Choice Test
Multiple Choice
Identify the choice that best completes the statement or answers the question.
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1. A unit of motion repeated over and over again is called the:
a. amplitude.
b. cycle.
c. velocity.
d. period.
2. The measure of the number of cycles per second is called:
a. frequency.
b. period.
c. amplitude.
d. vibration.
3. The amount of time required for one cycle to occur is called the:
a. amplitude.
b. frequency.
c. harmonic.
d. period.
4. Natural frequency is:
a. what happens when two waves combine to produce one wave of lower amplitude.
b. the frequency at which a system oscillates when it is disturbed.
c. the rate at which vibrations are naturally damped in an oscillator.
d. an oscillator whose frequency is a multiple of another wave.
5. If the length of a pendulum increases, the period of the pendulum:
a. increases.
b. decreases.
c. stays the same.
d. returns immediately to zero.
6. A pendulum makes one complete swing over and back in 2.2 seconds. Its frequency is:
a. 0.45 hertz.
b. 0.45 seconds.
c. 2.2 hertz.
d. 2.2 second.
7. An insect moves its wings up and down 144 times in three seconds. The period of this movement is:
a. 0.0208 seconds.
b. 48 hertz.
c. 48 seconds.
d. 144 hertz.
8. When damping occurs in a moving pendulum system, it causes the:
a. mass of the pendulum to decrease.
b. amplitude of the pendulum to decrease.
c. length of the pendulum to increase.
d. period of the pendulum to decrease.
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9. The amplitude of a pendulum is doubled. This means:
a. the pendulum will swing twice as far away from the center.
b. the period of the pendulum will be twice as long.
c. the frequency of the pendulum will be twice as high.
d. the pendulum will have twice its original mass.
____ 10. Which factor listed below has the greatest effect on the period of a pendulum?
a. Mass of the pendulum
b. Length of the string
c. Amplitude of the oscillations
d. Angle of the pendulum
____ 11. A mass oscillates on the end of a spring with a period of 4.0 seconds. What is the frequency of the oscillator?
a. 0.25 hertz
b. 0.50 hertz
c. 2.0 hertz
d. 5.0 hertz
Figure 23-1A
____ 12. Which of the graphs in Figure 23-1A has a period of two seconds?
a. Graph A
b. Graph B
c. Graph C
d. Graphs B and C
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____ 13. The graph below represents position versus time for the amplitude of a swinging pendulum.
Which letter correctly identifies the amplitude of the pendulum?
a. A
b. B
c. C
d. D
____ 14. The force that brings the motion of an oscillator toward its equilibrium position is called its ____ force.
a. gravitational
b. strong
c. restoring
d. centripetal
____ 15.
Which diagram above shows a system that is NOT in equilibrium?
a. A-Mass on a spring
b. B-Pendulum
c. C-Ball in a valley
d. D-Ball on a hill
____ 16. Which of the following is NOT a property of waves?
a. Frequency
b. Amplitude
c. Speed
d. Weight
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____ 17. A sound wave, generated at a frequency of 440 hertz has a wavelength of 2.3 meters as it travels through a
solid material. The approximate speed of the wave is ____ m/s.
a. 140
b. 190
c. 760
d. 1,000
Figure 23-2A
The diagram represents a wave pattern in a certain medium. Answer the following questions based on the
diagram.
____ 18. Referring to Figure 23-2A, the wavelength in the diagram is represented by the distance from:
a. A to D.
b. B to C.
c. D to F.
d. F to G.
____ 19. Referring to Figure 23-2A, the distance from point A to point G is 6.0 meters. If the speed of the wave is 330
meters per second, the frequency of this wave is ____ Hz.
a. 55
b. 165
c. 660
d. 1,980 Hz
____ 20. The wavelength of a certain frequency of light is 5 × 10 -7 meters. If the speed of light is 300,000 km/sec, the
frequency of the light is ____ hertz.
a. 1.67 × 10-15
b. 1.67 × 10-12
c. 6.00 × 1011
d. 6.00 × 1014
____ 21. A longitudinal wave travels:
a. only along the Earth's longitudinal lines.
b. perpendicular to the direction of oscillations.
c. in the same direction as the oscillations.
d. perpendicular to a latitude wave.
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____ 22. Which of the following usually occurs inside a material instead of at the surface?
a. Reflection
b. Refraction
c. Diffraction
d. Absorption
____ 23. When a wave bends as it crosses a boundary, ____ occurs.
a. reflection.
b. refraction.
c. absorption.
d. diffraction.
____ 24. The diagram represents a wave interaction as wave fronts pass through a small opening. This is an example
of:
a. diffraction.
b. refraction.
c. reflection.
d. absorption.
____ 25. Theaters often use heavy curtains to reduce echoes during performances. The function of the curtains is to
____ sound.
a. refract
b. reflect
c. diffract
d. absorb
____ 26. Diffraction causes waves to:
a. bounce off hard surfaces.
b. spread out through small openings.
c. become smaller as they move.
d. increase their frequency.
____ 27. You are still able to hear sounds coming from a room when the door is open only a tiny crack due to:
a. reflection.
b. refraction.
c. diffraction.
d. absorption.
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____ 28. Two large waves on the ocean come together on the ocean’s surface to form a gigantic wave. The interaction
responsible for this is called:
a. frequency amplification.
b. constructive interference.
c. destructive interference.
d. amplitude destruction.
____ 29. Although a door is only slightly opened, sound will pass from one room to another due mainly to:
a. reflection.
b. refraction.
c. diffraction.
d. absorption.
____ 30. Which pair of moving pulses in a rope will produce destructive interference?
a.
b.
c.
d.
A
B
C
D
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Chapter 23 Multiple Choice Test
Answer Section
MULTIPLE CHOICE
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
ANS: B
DIF: basic
REF: section 23.1
ANS: A
DIF: basic
REF: section 23.1
ANS: D
DIF: basic
REF: section 23.1
ANS: B
DIF: basic
REF: section 23.1
ANS: A
DIF: basic
REF: section 23.1
ANS: A
DIF: intermediate REF: section 23.1
ANS: A
DIF: intermediate REF: section 23.1
ANS: B
DIF: intermediate REF: section 23.1
ANS: A
DIF: intermediate REF: section 23.1
ANS: B
DIF: intermediate REF: section 23.1
ANS: A
DIF: intermediate REF: section 23.1
ANS: C
DIF: intermediate REF: section 23.1
ANS: B
DIF: intermediate REF: section 23.1
ANS: C
DIF: intermediate REF: section 23.1
ANS: D
DIF: advanced
REF: section 23.1
ANS: D
DIF: basic
REF: section 23.2
ANS: D
DIF: intermediate REF: section 23.2
ANS: C
DIF: intermediate REF: section 23.2
ANS: B
DIF: advanced
REF: section 23.2
ANS: D
speed of light = 300,000 km/sec × 1,000 m/km = 3 × 10 8 m/sec
frequency =
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
DIF:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
speed
3 × 10 8 m/sec
=
= 6 × 10 14 hertz
wavelength
5 × 10 −7 m
advanced
C
D
B
A
D
B
C
B
A
A
REF:
DIF:
DIF:
DIF:
DIF:
DIF:
DIF:
DIF:
DIF:
DIF:
DIF:
section 23.2
basic
basic
basic
basic
basic
basic
basic
basic
intermediate
intermediate
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
1
section 23.3
section 23.3
section 23.3
section 23.3
section 23.3
section 23.3
section 23.3
section 23.3
section 23.3
section 23.3
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Chapter 23 Multiple Choice Test [Answer Strip]
A
_____
9.
B 13.
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ID: A
D 17.
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D 22.
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B
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1.
B 10.
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B 23.
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A
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2.
A 11.
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A 24.
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D
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3.
C 14.
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B
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4.
D 15.
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C 18.
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A
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5.
B 19.
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D 25.
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D 20.
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B 26.
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C 12.
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A
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6.
A
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7.
D 16.
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C 21.
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B
_____
8.
C 27.
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Main Menu
Chapter 23 Multiple Choice Test [Answer Strip]
B 28.
_____
A 29.
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A 30.
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ID: A