light waves

1. 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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NGSS.MS-PS4-2

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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NGSS.MS-PS4-2

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.

• 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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NGSS.MS-PS4-2

Light must be _______________ in order for the material to be affected by light.

• reflected

• penetrated

• absorbed

• surrounded

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When a material allows light to pass through it,

• the material reflects the light and changes

• the material absorbs the light and doesn't change

• the material transmits the light and doesn't change

• material transmits the light and changes

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NGSS.MS-PS4-2

1. If a car sits out in the sun every day for a long time, can light from the sun damage the car’s paint?

• Yes. The paint can take in energy from the light, causing it to be damaged.

• No. Light can only change things by warming them up, so it cannot damage the car’s paint.

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

• Yes. Light from the sun can pull energy out of the paint, causing it to be damaged.

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NGSS.MS-PS4-2

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.

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What does this piece of evidence from the "What is Melanin?" article prove? (check ALL that apply)

• The genetic material in skin cells with more melanin absorbs less UV light from the sun.

• The genetic material in skin cells with less melanin absorbs more UV light from the sun.

• Melanin absorbs UV light from the sun, which can keep some UV light from reaching genetic material.

• UV light is attracted to skin cells.

• The genetic material in skin cells with more melanin absorbs more UV light from the sun.

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NGSS.MS-LS3-1

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

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

• 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 no light is being reflected into our eye.

Which wave has the greatest amplitude?

• The blue wave
• The red wave

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