Light Waves Review

Light Waves Review

Assessment

Assessment

Created by

Hilary Hayes

Science

8th Grade

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15 questions

Show answers

1.

Multiple Choice

1 min

1 pt

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A rug sits in a sunny place on the floor for a long time. Kiara thinks that light from the sun can cause the rug’s color to fade over time. Can light from the sun cause the rug’s color to fade?

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

No. Light can only change things by warming them up, so it cannot cause the rug’s color to fade.

Yes. The rug can absorb energy from the light, causing the rug’s color to fade.

Yes. Light from the sun can pull energy out of the rug, causing the rug’s color to fade.

2.

Multiple Choice

1 min

1 pt

Malachi uses some glue to fix a broken plate. He puts the glue under a desk lamp but the glue doesn’t dry. Then he puts the glue out in the sun and it dries. Why does light from the sun dry the glue when light from the desk lamp does not?

Because the glue can take in energy from the light from the sun but not from the light from the lamp.

Because light from the sun pulls energy out of the glue and light from the desk lamp does not.

Because the sun gives off a type of light that carries energy, and light from the desk lamp does not.

Because light from the sun carries heat molecules, and light from the desk lamp does not.

3.

Multiple Choice

1 min

1 pt

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.

4.

Multiple Choice

30 sec

1 pt

Light ...

can only be reflected

only comes in one form

carries energy from one place to another, even through empty space

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

5.

Multiple Choice

30 sec

1 pt

In order for light to change an object, that object must _______ the light and its __________.

reflect, wavelength

transmit, amplitude

reflect, energy

absorb, energy

6.

Multiple Choice

30 sec

1 pt

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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