WFA Light

We see objects because light is reflected from them.

• True

• False

Answer explanation

You see your face in the mirror because of the light reflected off of it.

Tags

NGSS.MS-PS4-2

When light is bent, it changes direction.

• True

• False

Answer explanation

If light enters a more dense medium it bends downward.

Tags

NGSS.MS-PS4-2

Light travels in waves.

• True

• False

Answer explanation

Light travels in waves and also as particles called photons.

Tags

NGSS.MS-PS4-1

When light waves slow down, they change direction.

• True

• False

Answer explanation

This is called refraction of light.

Tags

NGSS.MS-PS4-2

Which of the following is NOT a true statement regarding light? Light can be....

• Absorbed

• Abstracted

• Bent

• Reflected

Answer explanation

Light can be absorbed, reflected, refracted, diffracted, scattered, and transmitted.

Tags

NGSS.MS-PS4-2

Which of the following refract light?

• eye glasses

• microscopes

• telescopes

• all of the above

Answer explanation

Any time light passes through an object and is bent, it is classed refraction.

Tags

NGSS.MS-PS4-2

When you are outside and your black shirt heats up. This is due to...

• Transmission of light

• Absorption of light and it changing into heat

• Reflection of light

• Diffraction of light

Answer explanation

When light shines on dark colored objects, it undergoes an energy transformation into heat.

Tags

NGSS.MS-PS4-2

When sound waves or water waves spread out and go around a barrier such as a wall, this is called...

• Absorption

• Reflection

• Refraction

• Diffraction

Answer explanation

We can hear teacher when they are talking down the hallway because sound spreads out in all directions and can go around an opening such as a doorway.

Tags

NGSS.MS-PS4-2