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Waves, Sound, Light C2 Review Flashcards | StudBud
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Waves, Sound, Light C2 Review
Waves, Sound, Light C2 Review
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Science Review for Chapter 2
Flashcards
30 cards
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Practice quiz
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Host live
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Questions
30
Answers
1
Intense sounds can damage your hearing by...
making you cover your ears with your hands.
damaging the hair cells of the cochlea.
causing holes in the eardrum.
breaking the bones of the middle ear.
2
A car's muffler and some kinds of acoustical tile make sounds softer by...
absorbing energy from sound waves.
slowing the speed of sound waves.
increasing the pitch of sound waves.
decreasing the wavelength of sound waves.
3
Changing the length of a string affects the ________ of a musical instrument.
pitch
echolocation
sonar
ultrasound
4
What was the weirdest part of the picture of the boy holding his ears?
The dog was ginormous.
An airplane was taking off in his subdivision.
Someone was mowing in the rain
He didn't have his hood up in the rain.
5
What causes a clarinet and a violin to sound different, even when they play the same note?
They have the Doppler Effect.
They have different overtones
They have different wavelengths.
They have different frequencies
6
Musical instruments produce a specific kind of sound when they vibrate at their natural
echolocation
vibration
ultrasound
frequencies
7
True or False: When you speak, your vocal cords vibrate to produce sound.
True
False
8
Sound is a mechanical wave, so it always...
travels through matter
has the same amplitude
is made by a machine
travels through a vacuum
9
Doctors use __________ to check the health of fetuses during pregnancy.
ultrasound
frequencies
echolocation
pitch
10
True or False: The bones of the middle ear send electrical signals to the brain.
True
False
11
How does this instrument make sound?
The bow vibrates the strings.
She blows on it.
She shakes it so hard that the strings vibrate.
It is plugged into an amp
12
Sound becomes softer at a distance because the...
frequency of the sound becomes lower.
wavelength gets longer.
speed of the wave increases.
energy of the sound spreads out and intensity decreases.
13
A telephone converts the _______ caused by sound waves into electrical signals.
sonars
vibrations
pitches
Dopplar Effects
14
True or False: A sound wave transfers kinetic energy between particles by compressing them.
False
True
15
As a motorcycle drives toward you, the pitch will be __?__ than a motorcycle driving away.
equal
lower
weirder
higher
16
What is a rapid, back-and-forth motion?
hertz
pitch
dancing
vibration
17
What is a hertz (Hz)?
The highness or lowness of a note.
A tuning fork
10 wavelengths per second
One complete wavelength per second
18
Bats use ________ to find food by bouncing sound waves off their prey.
vibration
echolocation
frequencies
pitch
19
True or False: Sound waves travel fastest through a vacuum.
True
False
20
What is a decibel?
A unit to measure sound intensity.
A thing that you ring.
The scientific study of sound.
The little period that goes in a number
21
What is amplification in regards to sound?
Increasing the strength of an electrical signal
Muffling the sound.
Rockin' out, man
Plugging something in.
22
When you speak, the sound waves are produced by...
air making your vocal cords vibrate
the vibration of hairs in the cochlea
a transverse wave in the air
electrical signals generated in your brain
23
What is a vacuum (in science)?
Empty space
A jar
A cleaning thingee
Vibrations
24
The intensity of a sound wave is determined by its...
amplitude
wavelength
pitch
frequency
25
In which of the following materials would sound waves move the fastest?
cool air
water
hot air
steel
26
How could a cello player change the pitch of the instrument?
Move the bow across the strings faster.
Make the strings shorter or longer.
Hold it above her head.
Push harder on the strings.
27
True or False: As the temperature of the medium increases, the speed of sound increases.
True
False
28
To raise the pitch of the sound caused by a sound wave,
decrease the amplitude of the wave.
increase the wavelength of the wave.
decrease the energy of the wave.
increase the frequency of the wave.
29
Instruments that use echoes to locate objects on the sea floor are known as...
vibration
echolocation
sonar
pitch
30
Which unit is a measure of sound frequency?
decibel
hertz
amp
meters
