Energy of Waves

What property do all types of waves share?

• They transmit energy.

• They have the same frequency

• They travel through all forms of matter

• They can travel through a vacuum of empty space.

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NGSS.MS-PS4-2

How do electromagnetic and mechanical waves compare?

• Mechanical waves can only travel through a vacuum, but electromagnetic waves can travel through a solid, liquid, or gas

• Mechanical waves can travel through a solid, liquid, or gas, but electromagnetic waves can only travel through a gas

• Mechanical waves can only travel through a solid, liquid, or gas, but electromagnetic waves can travel through a vacuum.

• Mechanical waves can travel through a solid, liquid, or gas, but electromagnetic waves can only travel through a solid

When energy is added to a wave, how can the wave change? Select all that apply

• The amplitude can increase.

• The frequency can increase

• The wavelength can increase.

• The frequency can decrease

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NGSS.MS-PS4-1

Which units are used to measure the intensity of these sounds?

• hertz

• meters

• decibels

• meters/second

Look at the image. Why can Marco hear the music, even though he is not in the same room as the speaker?

• The sound is being reflected around the corners of the doorway.

• The sound is being refracted around the corners of the doorway

• The sound is being absorbed around the corners of the doorway.

• The sound is being diffracted around the corners of the doorway

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NGSS.MS-PS4-2

Cheyenne demonstrates sound reflection. What does she do in her demonstration?

• She pours water onto a sponge that absorbs it

• She bounces a rubber ball off of the surface of a table

• She creates a stream that flows around the sides of a boulder

• She makes a remote control car curve as it approaches an obstacle

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NGSS.MS-PS4-2

Which type of electromagnetic waves would the best to use in an object designed to cook food?

• infrared waves

• gamma waves

• visible waves

• microwaves

What is the term used to describe the greatest distance particles are displaced from their normal resting position in a transverse wave?

• frequency

• amplitude

• period

• wavelength

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NGSS.MS-PS4-1

What happens to a light wave as it moves from the air into water?

• It slows down and its wavelength gets shorter

• It slows down and its wavelength gets longer.

• It speeds up and its wavelength gets shorter

• It speeds up and its wavelength gets longer

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NGSS.MS-PS4-2

Why does white light separate into different colors?

• dispersion

• refraction

• reflection

• magnification

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NGSS.MS-PS4-2