The Nature of Sound

_____ is a disturbance that travels through a medium as a longitudinal wave.

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NGSS.MS-PS4-1

All sound waves begins with a vibration.

• True

• False

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NGSS.MS-PS4-1

These travel through air as longitudinal waves

• troughs

• compressions

• rarefactions

• crests

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NGSS.MS-PS4-2

NGSS.MS-PS4-1

Like other mechanical waves, sound waves carry energy through a medium without moving the particles of the medium along.

• False

• True

Common mediums for sound include

• liquids

• air

• solids

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NGSS.MS-PS4-2

Sound waves can

• reflect off objects

• diffract through narrow openings

• move around barriers

• interfere with each other

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NGSS.MS-PS4-2

A reflected sound wave is called an ____.

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NGSS.MS-PS4-2

In general, the surface, the stronger the reflection.

• harder

• softer

• rougher

• smoother

Tags

NGSS.MS-PS4-2

Sound waves do not always travel in a straight line.

• True

• False

Sound waves can also ________, or bend around corners.

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NGSS.MS-PS4-2