Why does sound travel faster through solids than air?

Molecules are closer together in solids than air

Paul listens to music through his radio. Which best explains the sound that Paul hears?

Sounds are waves that travel through matter.

In which way are all musical instruments the same

They use vibrations to make sounds.

Which of these best describes frequency?

The number of vibrations per unit of time

The sound of a fork tapping on a glass changes when water is added to the glass. Why?

Amount of water in glass affects how fast the glass vibrates

pattern of compressions and rarefactions

How is a telephone able to transmit sound?

It converts vibrations to electrical signals.

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Sound Energy Review

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Review of sound energy for test #soundreview

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Questions 20

Answers

1
Why does sound travel faster through solids than air?
Solids are mostly metals
Solids are insulators
Molecules are farther apart in solids
Molecules are closer together in solids than air
2
Paul listens to music through his radio. Which best explains the sound that Paul hears?
Sounds are fluids that travel through air.
Sounds are forms of energy that are converted from light.
Sounds are waves that travel through matter.
Sounds are gases that transform into vibrations.
3
What do waves carry through objects?
Water
Light
Energy
Sound
4
In which way are all musical instruments the same
They all send sound waves in one direction only.
They use vibrations to make sounds.
They all make sound waves with the same amplitude.
They all make sound waves when 2 objects strike one another.
5
The action that results when waves made in a pond strike the edges and bounce back is known as
amplitude
reflection
frequency
vibration
6
Which of these best describes frequency?
The loudness of the sound
The energy that bounces off an object
The number of vibrations per unit of time
The bending of light as it passes through substances
7
The loudness of a sound can be changed by
increasing the frequency
decreasing the pitch
increasing the amplitude
decreasing the wavelength
8
The strings on a harp are different lengths because the shorter the string, the ____ the pitch.
lower
higher
wider
skinnier
9
Sound waves can travel through all of these materials except
water
a vacuum
steel
air
10
What type of walls would be best for avoiding echos at a concert hall?
Smooth walls on 1 side only
Smooth walls on 4 sides
Bumpy walls on 4 sides
Bumpy walls on 1 side only
11
A sound wave travels through air and hits a glass of water. How will the sound wave change?
It will become louder
It will travel slower
It will travel faster
It will become softer
12
The sound of a fork tapping on a glass changes when water is added to the glass. Why?
Sound quality varies with the type of liquid used.
Sound travels faster in water than air.
Thickness of the glass interferes with the vibration of fork
Amount of water in glass affects how fast the glass vibrates
13
Sound waves travel fastest in
water
iron
air
a vacuum
14
Which of the following best explains the cause of windows rattling during a thunderstorm?
heat energy
light energy
electrical energy
sound energy
15
Sound travels as a
pattern of compressions and rarefactions
series of compressions only
wave without a medium
pattern of up and down vibrations
16
Which materials on the walls of a room would work best to keep sound from making an echo?
wood
carpet
glass
marble
17
An echo is a sound wave that has been
scattered
reflected
refracted
absorbed
18
How do different types of mediums affect a wave?
It controls the wavelength.
It controls the pitch.
It controls the amplitude.
It controls the speed.
19
If a musician playing a drum hits the drum with greater force, the sound would be
lower in pitch
quieter
louder
higher in pitch
20
How is a telephone able to transmit sound?
It carries the sounds through wires.
It converts vibrations to electrical signals.
It conducts vibrations from speaker to receiver.
It magnifies a persons voice.

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