Light Unit Review

In the picture a beam of light is shining on the water. What happens to the beam of light when it hits the water?

• Most of the light is reflected.

• Most of the light is absorbed.

• Most of the light is bent and redirected.

• Most of the light travels in the same direction.

Tags

NGSS.MS-PS4-2

A block of wood does not allow any light to be transmitted through it. The block of wood can best be described as

• transparent

• translucent

• invisible

• opaque

Tags

NGSS.MS-PS4-2

The glass in Paisley's bathroom window looks like the picture. It lets light in, but she cannot see through it very well. How could Paisley describe the window?

• transparent

• translucent

• opaque

• reflective

Kanayia puts a pencil into a glass of water. The pencil appears broken at the point where it enters the water. What causes the pencil to look broken?

• The water in the glass absorbs incoming light waves so light cannot pass through the water.

• The light waves traveling through the glass are reflected by the pencil when it is underneath the water.

• The light waves traveling through the glass are refracted as the waves pass from air to water.

• The water in the glass changes incoming light waves into a different form of energy.

Tags

NGSS.MS-PS4-2

A periscope, such as the one shown in the picture, is a tool that allows a person to see things from a higher point of view. A periscope works because two mirrors inside it

• reflect light

• produce light

• refract light

• absorb light

Tags

NGSS.MS-PS4-2

Light moves differently in water than in air. Light travels in a straight line through the air. When it strikes the water, light is _______, or bent as it travels into the water.

• reflected

• absorbed

• separated

• refracted

Tags

NGSS.MS-PS4-2

Which of the following describes something that light cannot pass through?

• translucent

• opaque

• transparent

• obtuse

A mirror works by ___________ the light so that you can see yourself.

• transmitting

• reflecting

• absorbing

• refracting

Tags

NGSS.MS-PS4-2

Which of the following describes the bending of light due to a change in its speed?

• absorption

• transmission

• refraction

• reflection

Objects can be seen clearly through a glass surface because it transmits most of the light striking it. Glass is an example of a(n) _______ material.

• transparent

• opaque

• invisible

• translucent

Tags

NGSS.MS-PS4-2