Name ________________________________________
Date ___________________
Block _______
CHAPTER 28 – STARS AND GALAXIES – TAKE HOME QUIZ
______________________________________________1. What is an asterism?
______________________ & _____________________ 2. Stars are composed mainly of what two elements?
______________________ & _____________________ 3. Galaxies are classified by their _____ & _____.
______________________ & _____________________ 4. A stellar nebula is composed of _____and _____.
__________________
_____________________
________________ 5. Name the three types of galaxies:
_______________________ 6. The unit most often used to express the distance to other galaxies is a _____.
_______________________ 7. All electromagnetic radiation travels and a speed of _____ km/sec.
8. Put the types of E.M.R. in order from longest wavelength to shortest wavelength
Long wavelength
short wavelength
_______________________ 9. Stars A and B are the same size but Star A is hotter. Which one is brighter?
_______________________ 10. Describe the motion of Polaris, the North Star, as the Earth rotates.
_______________________ 11. The color of the hottest stars is _____.
_______________________ 12. Any hot, bright sphere of plasma like the sun is called a _____.
_______________________ 13. The brightness of a star as we view it from Earth is the star’s ____ magnitude.
_______________________ 14. If a star’s lines are shifted towards the red end of the spectrum, then the
star is moving [ towards / away from ] the Earth.
_______________________ 15. Objects moving closer to the Earth, shift the spectrum to the [ blue / red ] end.
_______________________ 16. What is the most accepted theory for the origin of the universe?
_______________________ 17. Who came up with evidence for the Big Bang Theory?
_______________________ 18. What type of galaxy is the Milky Way galaxy?
_______________________ 19. A _____ is a group of millions or billions of stars held together by gravity.
_______________________ 20. The last life cycle phase (stage) for a small mass star like our sun is a _____.
_______________________ 21. The element _____ is the “fuel” of the sun. (What kind of fusion?)
_______________________ 22. By using a tool called a _____ astronomers can identify the elements in a star.
_______________________ 23. On an H-R Diagram, stars are classified by _____ and _____.
_______________________ 24. What is the next stage in the life cycle of the sun?
_______________________ 25. An example of a winter constellation is _____.
_______________________ 26. Stars that are hot, dim, and small are called _____.
_______________________ 27. A _____ is the densest object in the universe, and no light escapes.
_______________________ 28. _____ magnitude is a measurement that compares the true brightness of stars.
_______________________ 29. What kind of spectrum comes from white light?
_______________________ 30. Some constellations can only be seen during certain seasons because
_______________________ 31. The part of the electromagnetic spectrum that can be separated into colors of
the rainbow is called _____.
_______________________ 32. The _____ of a star will determine the evolutionary course a star will take.
_______________________ 33. The sun is a _____ star. (what type?)
_______________________ 34. The explosion of a massive star at the end of its life is called a _____.
_______________________ 35. The constellation that contains the “pointer stars” used to find Polaris is ____.
_______________________ 36. The first stage in the life cycle of a star is called a _____.
_______________________ 37. Which type of galaxy has all its stars concentrated in the middle?
_______________________ 38. Which type of galaxy is typically the faintest?
_______________________ 39. What does a light year measure?
_______________________ 40. Which star will appear brighter in the night sky, a star with an apparent
magnitude of 0 or a star with an apparent magnitude of +1?
_______________________ 41. Observing red shifts, most astronomers agree that the universe is _____.
_______________________ 42. The further away a galaxy is from us the [ faster / slower ] it is moving.
Use the HR diagram to answer the following questions:
43. Name the two brightest stars labeled.
______________________________________
44. Which star is hotter, Vega or Capella?
______________________________________
45. Which group of stars is the dimmest?
______________________________________
46. What group of stars does Arcturus belong to?
______________________________________
47. In the diagram below, circle the letter in the position where we would find our solar system.
______________________ 48. What type of galaxy is shown in the picture?
49-50. Label the constellations & the North Star in the diagram below.