Review

Light is a form of...

• energy

• heat

• sound

• color

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NGSS.MS-PS4-1

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Light travels _______________-

• backwards

• in curves

• at a right angle

• in a straight line

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What do water droplets in a rainbow act like?

• reflectors

• rays of lights

• prisms

• lasers

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By passing light through a prism, you can tell _______________

• that blue light is brighter than white lights

• that white light is made up of different colors

• the original source of light

• the weight of the prism

White light is made up of every color of the rainbow. As white light passes through a prism, it is refracted and these colors are produced. They are always in a certain order. Which two colors are missing in the diagram?

• yellow and blue

• yellow and white

• blue and purple

• pink and blue

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NGSS.MS-PS4-2

Materials such as wood and metal do not let light travel through them. We cannot see through them at all. They are said to be _____________.

• invisible

• translucent

• transparent

• opaque

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Which of these is an example of a translucent object?

• waxed paper

• book

• opaque

• glass

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When light hits a translucent object, the light is _________

• reflected

• scattered

• refracted

• laminated

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Which example shows light being reflected?

• Using a microscope to make small objects look larger.

• Using eyeglasses to see things better.

• Using a mirror to see your image.

• Using a prism to show the colors of that spectrum.

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NGSS.MS-PS4-2

The picture shows a pencil in a container of water. Why does the pencil look as if it's broken?

• Because light rays are bent when they pass from air into water and from water into air.

• Because the water separates the light into many colors.

• Because the shiny glass reflects light.

• Because the part of the pencil outside the water casts a shadow by the water.

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