Light is ________.

• moving matter

• reflected radiation

• radiant energy

• invisible colors

Tags

NGSS.MS-PS4-2

Which is not true about how light moves?

• It moves in waves.

• It moves at the same speed as sound.

• It can move through the nothingness of space.

• It moves as packets of energy called photons.

Read this sentence: I can see sunlight trough the translucent clouds, but I can't see the Sun itself. What does the word translucent mean in this sentence?

• clear

• allowing some light through

• allowing no light through

• colorful

Tags

NGSS.MS-PS4-2

Which of these is a natural light source?

• incandescent lightbulbs

• stars in the night sky

• both A and B

• neither A nor B

how does light behave when it hits an opaque surface?

• It is absorbed or reflected.

• Some light passes through.

• It refracts or bends.

• It passes through in a straight line.

Tags

NGSS.MS-PS4-2

What affects the shadow an object will make?

• the angle of the light source

• how near or far the light source is

• whether the object is opaque, translucent, or transparent

• all of the above

Tags

NGSS.MS-PS4-2

Light rays refract in a glass of water because _______.

• light moves at different speeds through different materials

• light bounces off a smooth surface at the same angle at which it strikes it

• light moves in a curved path

• the light moves the water from side to side

Tags

NGSS.MS-PS4-2

Read this sentence: The speed of ight can change depending on the medium through which it passes. Which word means about the same as medium?

• water

• spectrum

• substance

• radiation

Tags

NGSS.MS-PS4-2

We see color because ________.

• objects reflect the colors we see

• objects absorb the colors we don't see

• objects with color have pigments

• all of the above

Which is true about the human eye?

• The lens and retina help focus light.

• The pupil and iris control how much light enters the eye.

• Neither A nor B is true

• Both A and B are true.