Sound
Practice Test
1.
The change in pitch due to a moving wave source is called __________ .
a.
the Doppler effect
b.
the compressional effect
c.
resonance
d.
a rarefaction
Hint
2.
Sound waves cannot travel in __________.
a.
gases
b.
solids
c.
liquids
d.
empty space
Hint
3.
The intensity of sound is measured in units called __________ .
a.
decibels
b.
dopplers
c.
hertz
d.
reverberations
Hint
4.
In which of the following mediums will sound travel fastest?
a.
oil
b.
water
c.
air
d.
brick
Hint
5.
In the human ear, sound waves are gathered in the __________ .
a.
outer ear
b.
cochlea
c.
middle ear
d.
inner ear
Hint
6.
__________ waves are sound frequencies above 20,000 Hz.
a.
Ultrasonic
b.
Subsonic
c.
Supersonic
d.
Infrasonic
Hint
7.
Which of the following will you hear as a high pitch?
a.
sound wave with intensity of 10 dB
b.
sound wave with intensity of 100 dB
c.
sound wave with frequency of 50 Hz
d.
sound wave with frequency of 10,000 Hz
Hint
8.
The echoing effect produced by many reflections of sound is called __________ .
a.
intensity
b.
resonance
c.
reverberation
d.
rarefaction
Hint
9.
The study of sound is __________ .
a.
ultrasonics
b.
acoustics
c.
linguistics
d.
sonar
Hint
10.
The human perception of sound frequency is __________ .
a.
pitch
b.
loudness
c.
intensity
d.
resonance
Hint
11.
Sounds are produced by __________ .
a.
reverberations
b.
vibrations
c.
pitch
d.
frequencies
Hint
12.
The two types of regions that make up compressional waves are __________ .
a.
compressions and transmissions
b.
compressions and rarefactions
c.
vibrations and transmissions
d.
compressions and extensions
Hint
13.
How does temperature of a medium affect the speed of sound waves?
a.
As the temperature of a substance increases, sound waves in it move more slowly.
b.
Temperature does not affect the speed of sound waves.
c.
As the temperature of a substance decreases, sound waves in it move faster.
d.
As the temperature of a substance increases, sound waves in it move faster.
Hint
14.
The matter through which all sound waves travel is called __________ .
a.
atmosphere
b.
air
c.
a medium
d.
water
Hint
15.
__________ is a system that uses the reflection of underwater sound waves to detect objects.
a.
Sonar
b.
Echolocation
c.
Ultrasound
d.
Radar
Hint
16.
What type of waves are sound waves?
a.
compressional
b.
radio
c.
sonar
d.
transverse
Hint
17.
The human perception of sound intensity is __________ .
a.
frequency
b.
pitch
c.
loudness
d.
acoustics
Hint
18.
What describes the differences among sounds of the same pitch and loudness?
a.
overtone
b.
resonance
c.
acoustics
d.
quality
Hint
19.
A(n) __________ is a vibration whose frequency is a multiple of the fundamental frequency.
a.
overtone
b.
reverberation
c.
natural frequency
d.
resonant frequency
Hint
20.
The process of locating objects by emitting sounds and interpreting the reflected sound waves is __________ .
a.
radar
b.
echolocation
c.
ultrasound
d.
sonar
Hint
