Light and Sound Unit Test

What happens when sound waves travel through a material, such as door?

• They stop vibrating.

• They change volume.

• They vibrate the particles in the material.

• None of the other answer choices.

Tags

NGSS.MS-PS4-2

A characteristic of light is

• It is a form of energy.

• It can move through empty space.

• It travels in waves.

• All of the other answer choices.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

How does a beam of light travel after it has reflected off a mirror?

• In a straight line.

• In two opposite directions.

• In many different directions.

• It stops traveling.

Tags

NGSS.MS-PS4-2

When light hits the surface of a pool it

• slows down and changes directions, bouncing off the surface of the water.

• speeds up and moves in a straight line as it passes into the water.

• slows and bends at the point where it passes from air to water.

• none of the other answer choices.

Tags

NGSS.MS-PS4-2

When an object appears fuzzy with no details through a glass door it is a

• transparent object

• translucent object

• opaque material

• reflective material

Tags

NGSS.MS-PS4-2

As frequency of a sound wave increases the pitch

• becomes lower

• becomes higher

• becomes louder

• becomes softer

When white light waves enter a prism, they

• reflect

• become raindrops

• bend or refract

• absorb

Tags

NGSS.MS-PS4-2

A ______ can act like a prism.

• radio

• raindrop

• piece of paper

• laser

______ energy is carried only by vibrations through air, water, or other forms of matter.

• Light energy

• mechanical energy

• Electrical energy

• Sound Energy

If you and a friend create a string phone and are having trouble communicating through the cups, you should

• use smaller cups.

• talk quieter into the cup.

• make the string less tight by standing close together.

• make the string tighter by standing farther apart.