Mechanical Waves

Which is true of a mechanical wave?

• It must have a medium
• It must travel in empty space.
• It can travel in a vacuum.
• Both sound and light are examples.

Which of the following is true for sound waves?

• They require a medium.

• They are unrelated to vibrations.

• They cannot travel through liquids

• They can travel in a vacuum

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NGSS.MS-PS4-2

Which of the following can sound travel through?

• solid
• liquid
• gas
• all of the above

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NGSS.MS-PS4-2

Sound does not travel in space because

• Space is too far away.
• There is no matter in space.
• Space is the final frontier
• Space has planets.

The ______ of a sound depends on the medium through which it's moving.

• pitch

• vibration

• speed

• loudness

Tags

NGSS.MS-PS4-2

Which state of matter do sounds travel fastest in?

• Solid

• Liquid

• Gas

• Plasma

Why does sound travel faster in solids than in liquids or gases.

• They are harder.

• Solids are more dense.

• Solids have more energy.

• Gases fill their container.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Roughly what is the speed of sound in wood?

• About 50 m/s

• About 1 500 m/s

• About 4 500 m/s

• About 1800 m/s

Tags

NGSS.MS-PS4-2

Why does sound travel faster in solids than in liquids or gases?

• They are harder.

• The particles are closer together.

• Solids have more energy.

• Gases fill their container.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2