Chapter 4 Waves

What is transferred by a radio wave?

• air

• energy

• matter

• space

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NGSS.MS-PS4-1

In a longitudinal wave, where are the particles most spread out?

• compression

• crest

• rarefaction

• trough

Which would produce mechanical waves?

• burning a candle

• hitting a wall with a hammer

• turning on a flashlight

• tying a rope to a doorknob

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NGSS.MS-PS4-1

NGSS.MS-PS4-2

Which is an electromagnetic wave?

• burning a candle

• hitting a wall with a hammer

• turning on a flashlight

• typing a rope to a doorknob

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Which is an electromagnetic wave?

• a flag waving in the wind

• a vibrating guitar string

• the changes in the air that result from blowing a horn

• the waves that heat a cup of water in a microwave oven

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NGSS.MS-PS4-2

If the energy carried by a wave increases, which other wave property also increases?

• amplitude

• medium

• wavelength

• wave speed

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NGSS.MS-PS4-1

In which medium is the speed of a sound wave the greatest?

• air in your classroom

• iron railroad track

• pool of water

• vacuum in space

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NGSS.MS-PS4-2

What does the amount of refraction of a wave depend on?

• change in wave speed

• location of the normal line

• size of the object

• size of the opening between objects

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NGSS.MS-PS4-2

Two waves travel through each other, and a crest forms with an amplitude smaller than either original wave. What has happened?

• constructive interference

• destructive interference

• reflection

• refraction

Refraction occurs when a wave changes speed

• True

• False

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NGSS.MS-PS4-2