Amplify Light Waves Chapter 1 Review AG

When a material absorbs energy from light the energy causes the material...

• to stay the same

• to transmit the light

• to reflect the light

• to change

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Your friends say that they saw a special nail polish that changes color when it is out in the sun. Can light from the sun cause the nail polish to change color?

• No. Light is not a physical thing, so it cannot change physical things like nail polish.

• Yes. Light from the sun can pull energy out of the nail polish, causing it to change color.

• Yes. The nail polish can take in energy from the light, causing it to change color.

• No. Light can only change things by warming them up, so it cannot cause the nail polish to change color.

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Jayden says that the dentist can shine a special light on his teeth that will make his teeth become whiter. Can light change Jayden’s teeth?

• Yes. Jayden’s teeth can take in energy from the light, causing them to become whiter.

• Yes. Light can pull energy out of Jayden’s teeth, causing them to become whiter.

• No. Light can only change things by warming them up, so it cannot cause Jayden’s teeth to become whiter.

• No. Light is not a physical thing, so it cannot change physical things like teeth.

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What is the definition of energy?

• To take in

• Anything that has mass and takes up space

• The ability to make things move or change

• How often or fast something happens

What is the definition of light?

• A type of wave that carries energy from one place to another, even through empty space

• The ability to make things move or change

• Anything that has mass and takes up space

• A group of atoms joined together in a particular way

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What does absorb mean?

• To give off

• The ability to make things mover or change

• To bounce off

• To take in

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What does visualize mean?

• To pass through

• To form a mental picture of something that cannot be seen

• To give off

• An object that emits light

Your friend says that he heard about some rocks that would glow when they were put under a certain kind of light. Can light cause rocks to glow?

• No. Light is not a physical thing, so it cannot change physical things like rocks.

• No. Light can only change things by warming them up, so it cannot cause the rocks to glow. 2

• Yes. Light can pull energy out of the rocks, causing them to glow.

• Yes. Rocks can take in energy from the light, causing them to glow.

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Australia receives a similar amount of sunlight to countries that have lower skin cancer rates.

• True

• False

In Lesson 1.2, you observed that a solar-powered toy moved when you shined a flashlight on it. Select all of the statements below that accurately explain how this happened.

• Light from the flashlight carried energy.

• There was energy in the toy that was activated by the light.

• Energy from the flashlight was absorbed by the toy.

• The flashlight absorbed energy from the toy.

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