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Name: ____________________________ Date: ______________ Period: ____ Milky Way Galaxy Webquest Directions: Answer the following questions below in complete sentences. Use only scientifically valid websites! In other words, no Wikipedia, yahoo answers, etc. Under each answer, write down the website from which you got the information. 1. What type of galaxy is the Milky Way galaxy? Website: ___________________________________________________ 2. How do astronomers know that the Milky way has spiral arms? Website: ___________________________________________________ 3. How far are we from Galactic Center? Which arm are we in? Website: ___________________________________________________ 4. How old is our sun? Is that considered relatively or old? Website: ___________________________________________________ 5. How many light years across is the Milky Way galaxy? Website: ___________________________________________________ 6. If you could travel at the speed of light, how long would it take you to pass through the thinnest portion of the Galactic disk near our location in the Galaxy? Website: ___________________________________________________ 7. How many stars does our Milky Way approximately contain? Website: ___________________________________________________ 8. What are Pop I, Pop II, and Pop III stars? Website: ___________________________________________________ 9. What other galaxies are in the Local Group? Website: ___________________________________________________ 10. How far away is Andromeda galaxy from the Milky Way galaxy? Website: ___________________________________________________ 11. How can we determine the Milky Way’s mass? Website: ___________________________________________________ 12. How old is the Milky Way galaxy? Website: ___________________________________________________ 13. Except for size, how does the supermassive black hole in the center of our galaxy differ from typical black holes? Website: ___________________________________________________ 14. How long does it take for the sun to make 1 revolution around the center of the Milky Way galaxy? Website: ___________________________________________________ 15. Why are radio and x-ray telescopes the instruments of choice for study of the Galactic center? Website: ___________________________________________________ 16. Where are the youngest and oldest stars in the galaxy? Website: ___________________________________________________ 17. Explain how RR Lyrae stars and Cepheids are used to measure distances in space. Website: ___________________________________________________ 18. How is star formation related to spiral arms? Website: ___________________________________________________ 19. What is meant by dark matter? Why do astronomers conclude that the Milky Way contains dark matter? Website: ___________________________________________________ 20. What is El Dorado High School’s cosmic address? Website: ___________________________________________________
