How Light Travels Unit Quiz

The _______________ is composed of many types pf electromagnetic waves which radiate electric magnetic fields outward from a source.

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NGSS.MS-PS4-2

Electromagnetic radiation that can be detected by the human eye is __________.

Use pg. 152 to answer the question.

Which has a longer wave length, light or x-rays?

Answer explanation

light

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NGSS.HS-PS4-1

Use pg. 152 to answer the question.

Why do radio waves have the lowest frequency of all the waves in the electromagnetic spectrum?

Answer explanation

Radio waves are low-frequency waves because they have the longest wavelengths.

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NGSS.HS-PS4-1

Light waves can be described by their _________ and ___________.

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NGSS.HS-PS4-1

How is brightness determined?

Answer explanation

By how a person perceives the intensity of light.

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NGSS.MS-PS4-1

NGSS.MS-PS4-2

Light is a mechanical wave.

• True

• False

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NGSS.HS-PS4-3

__________ travels through a vacuum at a speed of about 300,000 km/s.

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NGSS.MS-PS4-1

Light waves move away from a source in all __________ and can be modeled as rays.

Why is a light ray a good model for light?

Answer explanation

A ray shows direction and points in the way that the light waves move. A ray is also straight, and a light moves in straight lines.

Tags

NGSS.MS-PS4-2