Amplify Light Waves Review

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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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

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Ana wonders how light can affect a mystery material. The table below shows what happens when different types of light hit the mystery material. Based on this information, can light change the mystery material?

• Yes, but the mystery material can change in only one way, such as by getting warm, because all the light that a material absorbs will affect that material in the same way.

• Yes, and the mystery material can change in one or two different ways, such as by getting warm and/or changing color, because different types of light can cause different changes to a material when they are absorbed.

• No. The mystery material can’t change because light is not a physical thing. Light cannot change physical things like the mystery material.

• There is no way to know whether the mystery material will change or not.

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A light wave ...

• Can be reflected

• Can be absorbed

• Can be transmitted

• carries energy

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Light travels in waves. Which of the following statements about light waves is NOT true.

• They travel in straight lines.

• They can come from natural or artificial sources.

• They can change directions when they are reflected or refracted.

• They can travel through any substance.

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NGSS.MS-PS4-2

Match these parts of a light wave

• how often waves occur

• crest

• top

• wavelength

• distance from wave to wave; gives light its color

• Amplitude

• height of the wave

• frequency

• bottom

• trough

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NGSS.MS-PS4-1

What kind of waves are light waves?

• Longitudinal waves

• Electrons

• Transverse Waves

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Based on this information, which type of light might cause the glass to melt?

• The infrared light can cause the glass to melt.

• The yellow light can cause the glass to melt.

• The X-ray light can cause the glass to melt.The X-ray light can cause the glass to melt.

• Any of these types of light can cause the glass to melt, because all light carries energy that can cause materials to change.

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What is the primary function of a lens in a microscope?

• To reflect light

• To absorb light

• To amplify light waves

• To change the color of light

Which of the following devices is used to amplify light waves?

• Telescope

• Microscope

• Laser

• Prism