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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 The range of radiant (light) energy arranged in order of wavelength and frequency Topic: Electromagnetic Spectrum Essential 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 Topic: Electromagnetic Spectrum Essential 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 Radio Waves used to look at the Sun Topic: Electromagnetic Spectrum Essential 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 Visible Light Infrared Topic: Electromagnetic Spectrum Essential 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 Topic: Electromagnetic Spectrum Essential 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 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? Time to use the left hand column • You will now write your own questions using the verbs provided. Topic: Electromagnetic Spectrum Essential 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 Topic: Electromagnetic Spectrum Essential 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 Topic: Electromagnetic Spectrum Essential 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 Topic: Electromagnetic Spectrum Essential 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 Topic: Electromagnetic Spectrum Essential 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 Topic: Electromagnetic Spectrum Essential 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 Now let’s write a summary Look at each question you wrote on your own, and answer each question in a complete sentence.
