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

Infrared Visible Light

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? Electromagnetic Spectrum The range of radiant (light) energy arranged in order of wavelength and frequency Choose one verb to write your question: Define Describe Explain

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 Choose one verb to write your question: Define Describe Explain

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 Choose one verb to write your question: Define Describe Explain

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 Choose one verb to write your question: Define Describe Explain

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 Choose one verb to write your question: Define Describe Explain

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 Choose one verb to write your question: Define Describe Explain

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