AnswersPhysics in the UniverseWaves

Practice Test Answers

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1
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Will there be an instance in which the wave interference is at the same level as point X?

A
Yes, the overlap will occur during the slope of the waves.
B
No, the interfering waves will always be above X.
C
No, the interfering waves will always fall below X.
D
Yes, the overlap will occur when the first wave hits point X.
2
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What do the areas labeled X and Y represent?

A
constructive interference in which waves strengthen each other
B
destructive interference in which waves cancel each other out
C
destructive interference in which waves strengthen each other
D
constructive interference in which waves cancel each other out
3

Which conclusion can be made based on the information in the table?

A
Wavelengths and frequency can vary inversely to produce the same wave speed.
B
Wave speed and wavelengths can vary inversely to produce the same frequency.
C
Frequency and wave speed can vary directly to produce the same wavelength.
D
Frequency and wavelengths can vary directly to produce the same wave speed.
4

Which label belongs in the area marked X?

A
Demodulates radio waves
B
Captures radio waves
C
Sends out radio waves
D
Amplifies radio waves
5

What best describes the motion of the medium particles in a longitudinal wave?

A
The medium does not move.
B
The medium vibrates parallel to the direction of the wave.
C
The medium moves in all directions.
D
The medium vibrates as it moves in a circular path around the wave.
6

Choose the correct answer from each drop-down menu to complete the statement.

Answer:

focus|epicenter

7

Choose the correct answer from each drop-down menu to complete the statement.

Answer:

elastic deformation|reversible

8

What best explains why a person can become sunburned by spending too much time at the beach?

A
Sunlight is a mechanical wave, and its frequency matches the natural frequency of skin to make heat.
B
Sunlight is an electromagnetic wave that gains energy as it travels through air to reach the person.
C
Sunlight is an electromagnetic wave carrying energy that is absorbed by the skin.
D
Sunlight is a mechanical wave that vibrates the skin particles to produce heat.
9

What best describes white light as it travels through a prism? Choose four correct answers.

A
The light bends in the prism.
B
The white light breaks into its component colors.
C
The light slows down.
D
The speed of light in the prism is 3 point 0 times 10 to the 8th power m/s .
E
Light reflects off of the surface of the prism.
10

Which best describes the amplitude of a sound wave and distance from the source where it will be measured with an intensity of 16 cap i sub o ?

A
Increase the amplitude to 8 x sub o and stand 2 meters from the source.
B
Increase the amplitude to 4 x sub o and stand 10 meters from the source.
C
Increase the amplitude to 2 x sub o and stand 2 meters from the source.
D
Increase the amplitude to 4 x sub o and stand 8 meters from the source.
11

In terms of the highest pitches they can make, which list correctly orders the instruments and vocals from highest to lowest?

A
tuba, bass guitar, violin, piccolo
B
violin, clarinet, French horn, tuba
C
piccolo, oboe, standup bass, tenor vocal
D
clarinet, bassoon, piccolo, soprano vocal
12

Which animals can hear a sound wave that has 18 comma 500 cycles in 0 point 7 5 seconds? Choose three correct answers.

A
crickets
B
humans
C
birds
D
fish
E
cats
F
bats
G
moths
13

Which best describes Sawyer’s error?

A
The arrow showing the direction of movement of the waves should be pointing to the left.
B
The wave fronts should be perpendicular to the direction in which the waves move.
C
The arrow showing the direction of movement of the waves should be pointing downward.
D
The wave fronts should be both parallel and perpendicular to the direction in which the waves move.
14

Which profession has the greatest risk of sound damage to the ear?

A
woodworker
B
librarian
C
truck driver
D
teacher
15

The diagram best represents which type of modulation?

A
FM
B
phase
C
pulse
D
AM
16

Which label identifies a rarefaction?

A
A
B
B
C
C
D
D

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