Speed of Sound in Various Materials: L3 Study Quiz

Which BEST describes the relationship between the material and the speed of sound as shown in this chart? The chart shows the speed of sound through various materials: Material | Speed of Sound (m/s) Air (20°C) | 344 Seawater | 1531 Brick | 4176 Steel | 6000

• The speed of sound decreases as the density of the material increases.

• The speed of sound increases as the density of the material increases.

• The speed of sound remains constant regardless of the material.

• The speed of sound is fastest in air compared to other materials.

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The speed of sound is generally greatest in:

• Gases and least in liquids

• Solids and least in gases

• Solids and least in liquids

• Gases and least in solids

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What happens to the light?

• It is absorbed.

• It is reflected.

• It is refracted.

• It is scattered.

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Which of these BEST explains why the mailbox casts a shadow?

• Light cannot pass through opaque objects.

• The Sun is very bright.

• Light waves change direction.

• The Sun is too far from the object.

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How does the pillow affect the sound waves coming from the speaker?

• The sound waves are destroyed.

• The sound waves are absorbed.

• The sound waves are increased.

• The sound waves are reflected.

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Which number indicates the amplitude of the wave?

• 1

• 2

• 3

• 4

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Robert is looking at the screen of an instrument that shows several waves. From point X to point Y, how many total wavelengths are represented?

• 1

• 2

• 3

• 4

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This illustration shows three different waves traveling through the same medium. Using just the information you have, How are the waves different from one another?

• They all have different wavelengths

• They all have different amplitudes, and therefore have different amounts of energy.

• They all started a different source

• They are made of different substances

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In Diagram A, what is the amplitude of the wave shown? Read the choices carefully.

• D

• A

• E

• B

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If a wave is traveling at a steady speed and its frequency is doubled, what happens to the wavelength of that wave?

• It lengthens.

• It does not change.

• It decreases.

• It increases.

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