Electromagnetic Spectrum

How are different types of radiation arranged along the electromagnetic spectrum?

• By how fast they travel

• By their sources

• By the amount of energy they carry

• By how radioactive they are

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NGSS.HS-PS4-3

What is the difference between a wave and a particle?

• A particle is a discrete unit of energy; a wave is a continuous flow of energy

• A wave carries energy; a particle carries light

• A wave moves at the speed of light; a particle can move at a range of speeds

• A wave carries electricity; a particle carries a magnetic charge

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NGSS.HS-PS4-3

Place the following types of EM radiation in order, from lowest energy to highest energy: A) Visible light; B) Gamma rays; C) Radio waves

• A, C, B

• C, A, B

• B, C, A

• C, B, A

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NGSS.HS-PS4-3

Which of the following transmits information using microwaves?

• 
• 
• 
• 

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NGSS.HS-PS4-3

NGSS.HS-PS4-5

Astronomers often scan the sky using devices called radio telescopes. What can you conclude about these devices?

• a. They send radio broadcasts out to distant stars and planets. b. c. d.

• They pick up the radio waves emitted by stars.

• They are less powerful than optical telescopes.

• They can detect ultraviolet radiation.

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NGSS.HS-PS4-3

NGSS.HS-PS4-5

Tim mentions that infrared radiation can be used to take special pictures called thermographs. "Graph" means "image." What can you infer about the prefix "thermo?"

• It means "light"

• It means "energy"

• It means "heat"

• It means "radio"

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NGSS.HS-PS4-3

What might happen if the ozone layer did not block the sun's ultraviolet rays?

• Humans would be able to see in the ultraviolet range of the EM spectrum

• Devices that use electromagnetic radiation would no longer work

• The surface of the earth would be much hotter

• Rates of skin cancer would skyrocket

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NGSS.HS-PS4-3

NGSS.HS-PS4-4

Which word best describes gamma rays?

• weak

• destructive

• visible

• harmless

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NGSS.HS-PS4-3

What do all forms of electromagnetic radiation have in common?

• their strength

• their wavelength

• their speed

• their frequency

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NGSS.HS-PS4-1

What produces electromagnetic radiation?

• Electrons changing energy levels

• Electrons bonding with other atoms

• Electrons leaving the atomic nucleus

• Electrons becoming protons or neutrons

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NGSS.HS-PS4-3