Electromagnetic Waves and Light

Which explains why the fork looks different under water?

• light can't pass through the glass

• the wavelength of light lengthens

• the amount of light increases when going through water

• light is refracted at an angle

Which of these provides the best explanation for why the pencil appears broken?

• The pencil absorbs the light rays that hit it.

• Water reflects light rays away from the pencil.

• Light rays are bent by the water in the glass.

• The surface of the water reflects the light rays.

Tags

NGSS.MS-PS4-2

At what point is the laser being reflected?

• A

• B

• C

• D

Tags

NGSS.MS-PS4-2

Light can behave as both a ______ and a _______.

• Ray; beam

• Wave; particle

• Natural source; unnatural source

• Refraction; reflection

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

Which electromagnetic waves are used in ovens and cell phone communications?

• Infrared rays

• ultraviolet rays

• microwaves

Tags

NGSS.MS-PS4-2

Electromagnetic waves that help your body produce vitamin D are called?

• ultraviolet rays

• x-rays

• gamma rays

For waves in any medium, as the wavelength decreases, what happens to the frequency?

• It also decrease

• It stays the same

• It increases

Tags

NGSS.HS-PS4-1

Which electromagnetic waves allow us to diagnose & treat cancer?

• Gamma rays

• X-rays

• Ultraviolet rays

Tags

NGSS.MS-PS4-2

Which electromagnetic waves help doctors detect broken bones inside your body?

• x-rays

• gamma rays

• ultraviolet rays

Which electromagnetic waves are used in devices such as heat lamps & TV remote controls?

• ultraviolet rays

• microwaves

• infrared rays

Tags

NGSS.MS-PS4-2