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4.1 Sound

Authored by KIMBERLY SHULTZ

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Used 2+ times

4.1 Sound
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12 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 11 pts

The medium through which a sound wave passes can be a solid, a liquid, or a gas. Properties of a wave might change when it moves from one medium to another. What happens to the speed of a sound wave when the medium changes from a gas to a solid?

It speeds up.
It slows down.
It remains the same.
It speeds up and then slows down.

2.

MULTIPLE CHOICE QUESTION

30 sec • 11 pts

When sound waves move through a medium, in what direction do the particles in the medium move?

The particles always move side to side.
The particles always move up and down.
The particles always move in the same direction as the wave.
The particles always move perpendicular to the direction of the wave.

3.

MULTIPLE CHOICE QUESTION

30 sec • 11 pts

What role does the inner ear play in hearing sounds?

It blocks out unwanted sounds.
It converts vibrations into electrical signals.
It helps determine if a sound is in front of or behind you.
It reflects high and low frequencies back and their source.

4.

MULTIPLE CHOICE QUESTION

30 sec • 11 pts

What property of a wave changes to create the Doppler effect?

its speed
its medium
its amplitude
its frequency

5.

MULTIPLE CHOICE QUESTION

30 sec • 11 pts

A large explosion can damage a person's hearing. What causes this damage?

Heat from the explosion burns the eardrum.
Transverse waves from the explosion cause vibrations that damage the ear.
The explosion triggers smaller explosions inside the ear.
Compression waves from the explosion cause vibrations that damage the ear.

6.

MULTIPLE CHOICE QUESTION

30 sec • 12 pts

Media Image

The diagram shows a sound wave moving through air. What property of the wave would change if the distance between points N and M was longer?

The pitch would decrease.
The loudness would decrease.
The amplitude would increase.
The frequency would increase.

7.

MULTIPLE CHOICE QUESTION

30 sec • 11 pts

Which statement best describes how humans hear sound?

Sound waves enter the ear canal and increase in amplitude, which causes you to hear the sound.
Sound waves cause parts of the ear to vibrate until the waves are converted to electrical signals, which are sent to the brain.
Sound waves travel into people ears, then the eardrum sends the sound waves to the brain.
Sound waves become sounds when they strike the eardrum inside the ear.

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