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Waves and Sound — Test Answers

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1
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What is the amplitude of this wave?

A
2 point 1 cm
B
2 point 6 cm
C
4 point 2 cm
D
1 point 3 centimeters
2
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Which lists the amplitudes of sound waves from these sources in order from greatest to least?

A
kids whispering, vacuum cleaner, jet airplane
B
chainsaw, diesel truck, rustling leaves
C
library, conversational speech, music from speaker
D
busy roadway, kids whispering, average home
4

Identify point B.

A
amplitude
B
trough
C
wavelength
D
crest
5

Visible light travels at a speed 3 point 0 times 10 to the 8th power of m over s If red light has a wavelength of 6 point 5 times 10 to the negative 7 power m , what the frequency of this light?

A
2 point 2 times 10 to the negative 15 power Hz
B
2 point 0 times 10 squared Hz
C
4 point 6 times 10 to the 14th power Hz
D
3 point 0 times 10 to the 8th power Hz
6

Which is the best example of the wave phenomenon called transmission?

A
A coin seems smaller at the bottom of a swimming pool.
B
A street is seen through a window.
C
An image of a tree is seen is on the surface of a smooth lake.
D
Sound is heard around an open doorway.
7

A guitar string is plucked. What best describes the formation and transmission of the sound wave?

A
The string vibrates the surrounding air, which produces a longitudinal wave.
B
The string vibrates the surrounding air, which produces a transverse wave.
C
The string produces a transverse wave that travels without a medium.
D
The string produces a longitudinal wave that travels without a medium.
8

A guitar string is plucked. What best describes the formation and transmission of the sound wave?

A
The string vibrates the surrounding air, which produces a longitudinal wave.
B
The string produces a transverse wave that travels without a medium.
C
The string vibrates the surrounding air, which produces a transverse wave.
D
The string produces a longitudinal wave that travels without a medium.
9

What is transmitted by all waves?

A
mass
B
energy
C
matter
D
sound
10

Which best describes the energy of a sound wave as it travels through a medium?

A
It decreases.
B
It remains the same.
C
It increases.
D
It depends on the medium.
11

What best describes the refraction of light rays?

A
light bending when it passes through a lens
B
light bouncing off of a mirror
C
light passing through a clear glass window
D
light getting brighter when two waves combine
14

What best describes a possible transfer of energy?

A
A longitudinal wave transfers energy perpendicular to wave motion.
B
A transverse wave transfers energy parallel to wave motion.
C
A mechanical wave transfers energy through matter.
D
A sound wave does not need a medium to transfer energy through.
16

What best describes the refraction of light rays?

A
light bending when it passes through a lens
B
light getting brighter when two waves combine
C
light passing through a clear glass window
D
light bouncing off of a mirror
17

Which demonstrates simple harmonic motion?

A
a player dribbling a basketball
B
a lion pacing the length of a cage
C
a chandelier swinging from the ceiling
D
a spring compressed in a ballpoint pen
18

Which best describes loudness?

A
an inherent measurement of the intensity of sound
B
the subjective measurement of the wavelength of a sound wave
C
an inherent measurement of the wavelength of a sound wave
D
the subjective measurement of the intensity of sound

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