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Topic: Electromagnetic Spectrum

Topic: Electromagnetic Spectrum. Essential Question: How do astronomers use the electromagnetic spectrum to study the universe?. Topic: Electromagnetic Spectrum Essential Question: How do astronomers use the electromagnetic spectrum to study the universe?. Electromagnetic Spectrum

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Topic: Electromagnetic Spectrum

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  1. Topic: Electromagnetic Spectrum Essential Question: How do astronomers use the electromagnetic spectrum to study the universe?

  2. 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

  3. 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

  4. 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

  5. Radio Waves used to look at the Sun

  6. 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

  7. Visible Light Infrared

  8. 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

  9. 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

  10. 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?

  11. Time to use the left hand column • You will now write your own questions using the verbs provided.

  12. Topic: Electromagnetic SpectrumEssential Question: How do astronomers use the electromagnetic spectrum to study the universe? Choose one verb to write your question: Define Describe Explain Electromagnetic Spectrum The range of radiant (light) energy arranged in order of wavelength and frequency

  13. Topic: Electromagnetic SpectrumEssential Question: How do astronomers use the electromagnetic spectrum to study the universe? Choose one verb to write your question: Define Describe Explain 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

  14. Topic: Electromagnetic SpectrumEssential Question: How do astronomers use the electromagnetic spectrum to study the universe? Choose one verb to write your question: Define Describe Explain 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

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

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

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

  18. Now let’s write a summary Look at each question you wrote on your own, and answer each question in a complete sentence.

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