Speed of sound

The more density an object has, the ______________ sound travels through it.

• slower
• faster

The warmer an object is, the ____________ sound will travel through it.

• faster
• slower

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NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which state of matter do sounds travel fastest in?

• Solid

• Liquid

• Gas

• Plasma

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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.

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NGSS.MS-PS4-1

Roughly what is the speed of sound in air?

• The speed of light.

• About 10 m/s

• About 340 m/s

• About 1 500 m/s

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NGSS.MS-PS4-1

NGSS.MS-PS4-2

A sound wave travels through water at a speed of 1500m/s for 2 seconds. How far does it travel?

• 750m

• 340m

• 3000m

• 300 000 000 m/s

A sound wave travels through water at a speed of 1500m/s for 3.5 seconds. What distance does it travel?

• 750m

• 4 500m

• 428.57m

• 365m

A sound wave travels through air. It travels 3 400m at a speed of 340 m/s. How long does it take to get there?

• 102000 seconds

• 666 seconds

• 4.25 seconds

• 10 seconds

A sound wave travels through air. It travels 1 700m at a speed of 340 m/s. How long does it take to get there?

• 578 000 seconds

• 666 seconds

• 4.25 seconds

• 5 seconds

A teacher bangs two bits of wood together. She hears an echo from a wall 0.14 seconds later. The wall is 25m away. What is the rough speed of sound, ACCORDING TO THESE RESULTS?

• Roughly 340 m/s

• Roughly 360 m/s

• Roughly 375 m/s

• Roughly 330 m/s