Light Waves

Your friends say that they saw a special nail polish that changes color when it is out in the sun. Can light from the sun cause the nail polish to change color?

• No. Light is not a physical thing, so it cannot change physical things like nail polish.

• Yes. Light from the sun can pull energy out of the nail polish, causing it to change color.

• Yes. The nail polish can take in energy from the light, causing it to change color.

• No. Light can only change things by warming them up, so it cannot cause the nail polish to change color.

Tags

NGSS.MS-PS3-5

NGSS.MS-PS4-2

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

Tags

NGSS.MS-PS2-3

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

Tags

NGSS.MS-PS4-2

Refraction occurs when a wave changes speed

• True

• False

Tags

NGSS.MS-PS4-2

Can you see the energy emitted by the sun?

• Yes

• No

• I can see visible light waves, but I can't see the energy in infrared waves or ultraviolet waves.

• I can't see visible light waves, but I can see the energy in infrared waves.

Which statement is true regarding the law of reflection for light waves?

• It only works with metallic surfaces

• It requires a perfectly smooth surface to function

• It can occur on any surface that reflects light

• It is only observable with artificial light sources

Tags

NGSS.MS-PS4-2

What is a dark area produced by an opaque object?

• Shadow

• Black Hole

• Transparent

• Translucent

Tags

NGSS.MS-PS4-2

Where is the focal point for a person with eyes that are nearsighted?

• Before the light reaches the eye

• Behind the retina (back of the eye)

• Before the retina (back of the eye)

• When the light reaches the retina (back of the eye)

Distance between two waves' crests or two waves' troughs

• Wavelength

• Amplitude

• Frequency

• Rarefaction

What is the speed of light in a vacuum?

• 299,792,458 meters per second

• 150,000,000 meters per second

• 3,000,000 meters per second

• 30,000 meters per second

Tags

NGSS.HS-PS4-1