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Stars and Galaxies Study guide Use your textbook and notes to help you answer these questions. I will do a review the day before the test. I will hold a study session at 7:30 a.m. on the day of the test – Thursday, April 14, 2016. http://www.superteachertools.us/jeopardyx/jeopardy-review-game.php?gamefile=1825422 Reading Notes – Telescopes; Reading Quiz – Telescope 1. What is a telescope? 2. How are telescopes used by astronomers? 3. How is a reflecting telescope different from a refracting telescope? 4. What type of telescope is Hubble? 5. Which of the types of electromagnetic radiation are being used in telescopes to study space? Exploring Space Worksheet 6. What happened during the Big Bang Theory? What does it help to explain? 7. What is a light year? What is it used to measure in space? 8. What is a spectroscope? How do scientists use it to learn what elements are in the stars? 9. What is dark matter? What type of object do scientists believe it helps to hold together? Reading Notes – Galaxies; Graphic Organizer - Galaxies 10. What is a galaxy? 11. What are the three types of galaxies? 12. What is the name of our galaxy? What type of galaxy is it? 13. For each characteristic below, mark S – Spiral, E – Elliptical, I – Irregular for the types of galaxy it describes. For some of these characteristics, there are more than one answer. _________ Older stars reside primarily in this galaxy _________ Contains stars, gas and dust _________Younger and older stars are found in this galaxy _________ Has arms that spin around the central section of this galaxy _________ Can be circular to oval in shape _________ Has no definite shape _________ Held together by gravity 14. Label each picture with the type of galaxy is represents: _______________________ ____________________ _________________ Video Worksheet – Life and Death of a Star; Life Cycle of Stars Worksheet 15. What star is the closest star to Earth? 16. What do stars form out of in the life cycle? What do we call the new star? 17. What stage is our sun currently in its life cycle? 18. What stages will our Sun go through after its current stage? 19. What element are stars burning in their main sequence? 20. What is a planetary nebula? 21. What is a supernova? 22. How is a 1A Supernova different from a type 2 supernova? 23. Why can’t a star fuse Iron? 24. Describe a neutron star. 25. What is a pulsar? 26. What is a black hole? 27. What is a brown dwarf? 28. How does the life cycle of a low mass star different from the life cycle of a high mass star? Notes Handout – Star Classification; Hertzsprung-Russell Diagram Worksheets 29. What color star is the hottest? Coldest? 30. What color is our star, the Sun? 31. Which star is brighter: first magnitude stars or sixth magnitude stars? 32. What does magnitude of stars really measure? 33. How is apparent magnitude different from absolute magnitude? 34. What is a parallax? What is it used to measure in space? 35. What is a Hertzsprung Russell Diagram? 36. What is on the X axis of a HR Diagram? 37. What is on the Y axis of the HR Diagram? 38. What is used to determine luminosity? 39. How are main sequence stars represented on a HR Diagram? 40. Where would you find the white dwarf stars on a HR Diagram? 41. Where would you find the red giants stars on a HR Diagram? 42. Most stars are in what stage of their life cycle? Use the HR Diagram to answer the questions that follow: 43. Which star is not in the Main Sequence: Betelgeuse, Sun, Zeta Eridani, Procyon? 44. Which star is brighter: Capella or Antares? 45. Which star is hotter: Sirius B or Alpha Centauri A? 46. Using both brightness and temperature, describe the Sun’s characteristics. 47. What color star is North Star? 48. What color star is Barnard’s Star?