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Physical Science Chapter 15, 16a Waves and Sound Flashcards | StudBud
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Physical Science Chapter 15, 16a Waves and Sound
Physical Science Chapter 15, 16a Waves and Sound
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review of Holt Physical Science Chapter 15 and 16a about waves and sound waves.
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1
Radar works by sending a signal out from an air-traffic control tower that is:
increased in intensity as it passes through the atmosphere
reflected off a plane back to the control tower
scanned and analyzed by a receiver on board an airplane
analyzed by a Doppler scanner on the ground
2
A sonar system measures distance by determining the:
time it takes for sound waves to be reflected from a surface
density of a body of water
time it takes for sound to be absorbed
difference between regular sound waves and ultrasound
3
Sonar and ultrasound technology depend on the ability of waves to:
reflect sound
disperse sound
amplify sound
dissipate sound
4
Sound waves are:
longitudinal waves
circular waves
polarized waves
transverse waves
5
What is the distance between 2 wave crests called?
amplitude
wavelength
period
frequency
6
A wave front is:
the first part of a wave
initial disturbance in a medium
all the points of a wave with the same energy
a line connecting a crest and a trough
7
The medium that seismic waves travels through is:
air
a vacuum
rocks
energy
8
Which of the following takes place in hearing?
ear transmits signals to brain
all of the above
ear amplifies vibrations
ear senses vibrations in air
9
Resonance amplifies the sound of a guitar when the:
pitch of a note is compared with a pure tone
vibration of the string causes a standing wave
guitar string and body are vibrating at the same frequency
intensity of a sound decreases over time
10
When a sound wave strikes your eardrum, it causes forced vibrations that are transferred to:
hammer, anvil, and stirrup
brain
longitudinal canal
outer ear
11
Doppler effect says if you hear a siren standing still, then run towards it, frequency will:
none of the above
increase
decrease
remain the same
12
The __________ of a longitudinal wave goes outward while its particles move back and forth.
wave front
medium
kinetic energy
crest
13
Waves are moving at a speed of 40 m/s; if the frequency is 8 Hz, what is the wavelength?
48 m
32 m
320 m
5 m
14
A shell up on the beach gets hit by a wave every 12 seconds. What is the wave's period?
12 seconds
0.5 Hz
5 waves per minute
12 Hz
15
Water waves:
transport energy but not water
transport water but not energy
are not mechanical waves
transport energy and water
16
The structure in the cochlea containing hair cells that vibrate at different frequencies is:
basilar membrane
inner ear
hammer and anvil
eardrum
17
What does the body of a violin add to increase its loudness?
infrasound
resonance
pitch
ultrasound
18
Which of these affects the loudness of a sound?
frequency of the waves
intensity of the waves
pitch of the sound
speed of the sound
19
The amplitude of the wave in the diagram is:
0.06 m
0.03 m
0.04 m
0.08 m
20
Waves travel quickly in a ________ because the molecules are closely packed.
all of the above
solid
gas
liquid
21
The pitch of a sound is most closely related to the:
medium through which the sound travels
distance from the sound source
frequency of the sound waves
intensity of the sound
22
If a transverse wave is moving from right to left, the particles in it are moving:
none of the above
right to left
up and down
left to right
23
Sonar uses:
low-frequency sound waves
ultrasound
all of the above
dispersion of sound waves
24
Most musical instruments produce sound through the vibration of:
air columns
strings
membranes
all of the above
25
Water surface waves are:
longitudinal and perpendicular waves
longitudinal and transverse waves
transverse and horizontal waves
vertical and horizontal waves
