When a material allows light to pass through it,

the material transmits the light and doesn't change

the material reflects the light and changes

the material absorbs the light and doesn't change

material transmits the light and changes

The two terms to describe a the properties light wave are

Wavelength: How far apart the peaks are

Which of the following is true about waves?

When wavelength decreases, frequency increases

When wavelength increases frequency increases

When wavelength decreases, frequency decreases

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.

Energy from the flashlight was absorbed by the toy.

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

The flashlight absorbed energy from the toy.

How are we able to perceive an object as being the color white?

All colors of visible light are reflected off an object and then to our eye.

All colors of visible light are absorbed by an object and then reflected into our eye.

All colors of visible light are absorbed by an object and no light is being reflected into our eye.

Different types of light can affect the same material or object in different ways.

True, for example radio waves are transmitted through plant cells while visible light is absorbed.

False, because all light is the same.

False, if an object can absorb light then it will be able to absorb it regardless of what type of light it is.

A material absorbs energy from some types of light and not others. Is this statement true or false?

True, for example a green plant absorbs red and blue light while it reflects green light.

True, as long as the temperature of the light is the same.

False, an object will either absorb light or not, it can't do both.

False, since light is not created or destroyed all objects must absorb light.

When light shines on a black object, why does it get warm?

because it absorbs all types of visible light that reach it

because it reflects all types of visibile light that reach it

because all types of light carry energy

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?

Yes. The rug can take in energy from the light, causing 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. Light from the sun can pull energy out of the rug, causing the rug's color to fade.

These graphs show the wavelength and amplitude of light coming from three lasers. Could any of these lasers be giving off a different type of light?

Yes. Laser 2 could be giving off a different type of light because Laser 2 has a different wavelength than Lasers 1 and 3.

Yes. Laser 3 could be giving off a different type of light because Laser 3 has a different amplitude than Lasers 1 and 2.

Yes. All three lasers must be giving off different types of light because every light source gives off its own type of light.

No. All three lasers must be giving off the same type of light because all three are lasers, and the same kind of light source gives off the same type of light.

Aniyah has a special type of paper that can permanently change color. She wonders whether light can cause the paper’s color to change. The table below shows what happens when different types of light hit the paper. Based on this information, which type of light can cause the paper to change color?

The ultraviolet light can cause the paper to change color.

The infrared light can cause the paper to change color.

The X-ray light can cause the paper to change color.

Any of these types of light can cause the paper to change color, because all light carries energy that can cause materials to change.

Light Waves

Authored by Charles Martinez

Physics

8th Grade

NGSS covered

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32 questions

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MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Light Travels in a _______ path.

curved

straight

zig-zag

random

MULTIPLE CHOICE QUESTION

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

Tags

NGSS.MS-PS4-2

NGSS.MS-PS4-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In order to see an object, light must be

transmitted into your skin

reflected off the object and into your eyes

reflected off the object then off the ground then into your eyes

absorbed by your genetic material

Tags

NGSS.MS-PS4-2

MULTIPLE CHOICE QUESTION

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

Tags

NGSS.MS-PS4-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If an object appears green it must ...

reflect green light

transmit blue light

absorb green light

reflect yellow and orange light

Tags

NGSS.MS-PS4-2

MULTIPLE CHOICE QUESTION

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

Tags

NGSS.MS-PS4-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Different types of light can change a material ...

in different ways

in the same way

only if it transmits the light

only if it reflects the light

Tags

NGSS.MS-PS4-2

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Light Waves

Light Travels in a _______ path.

Light ...

In order to see an object, light must be

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

If an object appears green it must ...

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

Different types of light can change a material ...

When a material allows light to pass through it,

The two terms to describe a the properties light wave are

A light wave ...

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In order for light to change an object, that object must _ the light and its ____.