Topic: Electromagnetic Spectrum

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Topic Electromagnetic Spectrum

• Essential Question How do astronomers use the
  electromagnetic spectrum to study the universe?

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Topic Electromagnetic SpectrumEssential
Question How do astronomers use the
electromagnetic spectrum to study the universe?

• Electromagnetic Spectrum
• The range of radiant (light) energy arranged in
  order of wavelength and frequency

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Topic Electromagnetic SpectrumEssential
Question How do astronomers use the
electromagnetic spectrum to study the universe?

• Wavelength
• The distance between two crests of a wave
• Frequency
• A count of the number of crests that pass a point
  in a given amount of time
• High frequency high energy

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Topic Electromagnetic SpectrumEssential
Question How do astronomers use the
electromagnetic spectrum to study the universe?

• Radio Waves
• Astronomers use them to study what stars are made
  of, their structure and movement
• Microwaves
• Used to cook your food
• Used to learn about galaxies
• Used to learn about stars that are behind clouds
  of dust

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Radio Waves used to look at the Sun
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Topic Electromagnetic SpectrumEssential
Question How do astronomers use the
electromagnetic spectrum to study the universe?

• Infrared Waves
• Used by astronomers to map dust between stars
• Visible Light
• Rainbows show the different wavelengths of light
• We are able to see colors of stars which gives us
  a clue about their temperature
• Helps us understand the Red Shift and Blue Shift

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Visible Light
Infrared
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Topic Electromagnetic SpectrumEssential
Question How do astronomers use the
electromagnetic spectrum to study the universe?

• Ultraviolet Rays
• Used to learn about the structure and how
  galaxies change
• X-Ray Wave
• Used to detect black holes because black holes
  give off X-Ray waves

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Topic Electromagnetic SpectrumEssential
Question How do astronomers use the
electromagnetic spectrum to study the universe?

• Gamma Rays
• Given off from any explosion like a supernova or
  a black hole
• Astronomers use them to gain knowledge of how our
  universe began and how fast it is expanding

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Now take some time

• Take 2 minutes to go over your notes and
  highlight or underline the main ideas that answer
  the essential question, you should not highlight
  everything
• Essential Question How do astronomers use the
  electromagnetic spectrum to study the universe?

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Time to use the left hand column

• You will now write your own questions using the
  verbs provided.

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Topic Electromagnetic SpectrumEssential
Question How do astronomers use the
electromagnetic spectrum to study the universe?

• Electromagnetic Spectrum
• The range of radiant (light) energy arranged in
  order of wavelength and frequency

Choose one verb to write your question Define De
scribe Explain
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Topic Electromagnetic SpectrumEssential
Question How do astronomers use the
electromagnetic spectrum to study the universe?

• Wavelength
• The distance between two crests of a wave
• Frequency
• A count of the number of crests that pass a point
  in a given amount of time
• High frequency high energy

Choose one verb to write your question Define De
scribe Explain
15
Topic Electromagnetic SpectrumEssential
Question How do astronomers use the
electromagnetic spectrum to study the universe?

• Radio Waves
• Astronomers use them to study what stars are made
  of, their structure and movement
• Microwaves
• Used to cook your food
• Used to learn about galaxies
• Used to learn about stars that are behind clouds
  of dust

Choose one verb to write your question Define De
scribe Explain
16
Topic Electromagnetic SpectrumEssential
Question How do astronomers use the
electromagnetic spectrum to study the universe?

• Infrared Waves
• Used by astronomers to map dust between stars
• Visible Light
• Rainbows show the different wavelengths of light
• We are able to see colors of stars which gives us
  a clue about their temperature
• Helps us understand the Red Shift and Blue Shift

Choose one verb to write your question Define De
scribe Explain
17
Topic Electromagnetic SpectrumEssential
Question How do astronomers use the
electromagnetic spectrum to study the universe?

• Ultraviolet Rays
• Used to learn about the structure and how
  galaxies change
• X-Ray Wave
• Used to detect black holes because black holes
  give off X-Ray waves

Choose one verb to write your question Define De
scribe Explain
18
Topic Electromagnetic SpectrumEssential
Question How do astronomers use the
electromagnetic spectrum to study the universe?

• Gamma Rays
• Given off from any explosion like a supernova or
  a black hole
• Astronomers use them to gain knowledge of how our
  universe began and how fast it is expanding

Choose one verb to write your question Define De
scribe Explain
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Now lets write a summary

• Look at each question you wrote on your own, and
  answer each question in a complete sentence.