Light and Sound

You want to compare how the letters look through three different materials. The picture shows the three materials. Which statement best describes what you see?

• The top material is translucent, the middle material is opaque, and the bottom material is transparent.

• The top material is opaque, the middle material is translucent, and the bottom material is transparent.

• The top material is transparent, the middle material is opaque, and the bottom material is translucent.

• The top material is translucent, the middle material is transparent, and the bottom material is opaque.

Tags

NGSS.MS-PS4-2

Dontae holds objects in front of a candle to see if light shines through. These are his results.

Object Light

brick none

clear glass all

paper some

box none

plastic wrap all

wax paper some

Which objects that Dontae tested are translucent?

• the box and the wax paper

• the brick and the box

• the paper and the wax paper

• the clear glass and the plastic wrap

Tags

NGSS.MS-PS4-2

Why can people see themselves in a mirror?

• The light hits a mirror and reflects back into your eyes.

• Light comes out of the mirror and into your eyes.

• Light goes through the mirror and hits a person's eyes on the other side.

• Light comes out of a person's eyes and hits the mirror.

Tags

NGSS.MS-PS4-2

When light hits a mirror at an angle, how does it bounce off of a mirror?

• straight up

• at an angle

• straight down

• light doesn't bounce off

Tags

NGSS.MS-PS4-2

What happens when a ray of light travels through the lens of a pair of eyeglasses that someone is wearing?

• The lens causes the light to change direction toward the location the person needs to see.

• The lens doesn't change the direction of the light.

• The lens absorbs and stops the light ray from getting through.

• The lens doesn't do anything to the ray of light.

Tags

NGSS.MS-PS4-1

Karen places a pencil into a glass of water. This picture shows what Karen sees. What is happening to light that makes the pencil appear to be bent or broken?

• Light is being absorbed.

• Light is being reflected.

• Light is being spread out.

• Light is being refracted.

Tags

NGSS.MS-PS4-2

Which object refracts the most light?

• brick

• window

• prism

• mirror

Tags

NGSS.MS-PS4-2

Which sounds are caused by fast-vibrating objects?

• running

• rapid clapping

• writing

• grass in a breeze

Tags

NGSS.MS-PS4-1

Aiyana knocks on Mrs. Wright's wooden class door. Which best explains why Mrs. Wright can hear the knock?

• The knock creates sound through vibrations on the wooden door.

• The knock creates sound through space on the wooden door.

• The knock creates sound through electricity on the wooden door.

• The knock doesn't create sound.

Tags

NGSS.MS-PS4-2

What creates high-pitched sound?

• fast vibrations

• slow vibrations

• rough vibrations

• smooth vibrations

Tags

NGSS.MS-PS4-2