2.3 Light Energy : Science WKLY TEST

What happens during the refraction of light as light passes through a prism?

• The light concentrates in a small spot.

• The light bends and separates into bands of colored light.

• The light bends to form an image of an object.

• The light is absorbed by the prism, which creates a dark shadow.

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NGSS.MS-PS4-2

What causes light to bend, or refract, when it travels from one medium to another?

• The light waves bounce, or reflect.

• The light waves are partially absorbed.

• The light waves gain or lose energy.

• The light waves change speed.

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NGSS.MS-PS4-2

The refraction of light explains which of these observations?

• You see your reflection in a mirror.

• You feel warm when sunlight strikes your skin.

• A white table appears pink when you wear tinted sunglasses

• A slanted pole appears to bend where it enters the water

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NGSS.MS-PS4-2

The sun produces light, which is why it looks so bright in the sky. The moon, however, does not make its own light. The moon looks bright to people on Earth because light from the sun bounces off the moon toward Earth. Which model best represents how light comes from the sun and the moon?

• Two tennis balls

• A flashlight and a mirror

• Two glowing light bulbs

• A burning candle and a lens

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NGSS.MS-ESS1-1

Shana wants to demonstrate that light can be reflected. Which of these materials should she use to reflect the most light?

• A steel spoon

• A thick lens

• A black rock

• A large prism

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NGSS.MS-PS4-2

Anna's mother bought a new lamp for the living room, and Anna thinks it makes a perfect light to read by. The drawing shows the new lamp.

What is one fact about the lamp's translucent shade that affects the light that the lamp provides?

• The shade allows some light to pass through its sides, and more light through its open top and bottom.

• The shade allows light to pass through its open top and bottom, but not through its sides.

• The shade causes light to reflect back onto the light bulb, making the bulb glow brighter.

• The shade sends all the light produced by the light bulb through its top, bottom, and sides.

Tags

NGSS.MS-PS4-2

The diagram shows a lens, which is a polished piece of glass. The arrows represent light.

According to the diagram, which of the following statements is true?

• Lenses reflect all light that passes through them.

• Lenses absorb much of the light that passes through them.

• Light travels in a straight line once it passes through an object.

• Light travels in a straight line until it strikes an object.

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NGSS.MS-PS4-2

Why do you think most lampshades are made of translucent materials instead of transparent materials?

• Because direct light from a light bulb can be too bright

• Because direct light disperses as it travels from the light bulb

• So light can be reflected to shine around the room

• None of the other answer choices

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NGSS.MS-PS4-2

Why is an apple red?

• Red is the color of light that is absorbed by the apple.

• Red is the color of light that is bounced off the apple.

• Red is the color of light that is refracted by the apple.

• None of the other answer choices

Tags

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

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NGSS.MS-PS4-2