Download Name: Date: Period: ______ Unit 9

Name: __________________________________________________________ Date: __________________________ Period: _________
Unit 9 - Astronomy
Test Details
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50 multiple choice questions (2 pts each)
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36 point group test (creating an ocean floor profile, currents map, critical thinking questions)
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Test worth 136 points
27.1 & 27.2 – Formation & Models of the Solar System
1. What is a solar nebula?
2. What is the nebular hypothesis?
3. How did the land and atmosphere of Earth form?
4. How do the theories of Aristotle and Copernicus differ?
5. What did Ptolemy propose about the solar system?
6. What is a protoplanet?
7. What is differentiation? What part(s) of Earth did this create?
8. What is Kepler’s first law?
9. What is outgassing?
10. How did the first oceans on Earth form?
27.3 & 27.4 – The Inner & Outer Planets
11. What is the difference between a terrestrial planet and a gas giant?
12. Agree or disagree: Studying the inner planets can help us to understand the development of Earth
better than studying the outer planets.
13. What is the relationship between distance from the sun and orbital period?
14. What separates the inner planets from the outer planets?
Ch. 29 – The Sun
15. Agree or disagree: The process of nuclear fusion in the sun converts matter into energy.
16. What can scientists deduce from a star’s spectrum?
17. Where does nuclear fusion occur in the sun?
18. What are the 3 layers of the sun’s atmosphere?
19. What are solar ejections? List 3 examples of solar ejections.
20. What are the two products of nuclear fusion?
21. What is the relationship between sunspots and powerful magnetic fields on the sun?
22. What are auroras? What causes them? Where do you normally see them?
23. How do sunspots form?
24. What is nuclear fusion?
25. How long is a sunspot cycle?
26. What is a coronal mass ejection?
27. Although the trigger for a solar flare is unknown, scientists know that…
28. The sun is composed mainly of _______________________ and ______________________.
29. Can the sun’s magnetic field stop ALL subatomic particles?
30. What is a prominence?
31. What is produced when hydrogen turns into helium?
30.1 – Star Characteristics
32. What does the spectrum of a star that is moving away from Earth look like? Moving toward Earth?
33. What indicates the surface temperature of a star?
34. Why do stars appear to move in the sky?
30.2 – Stellar Evolution
35. Use the Hertzsprung-Russell diagram to explain the differences between white dwarfs, mainsequence stars and giant stars.
36. Agree or disagree: Scientists cannot directly observe the entire life cycle of a star.
37. What is a nova?
38. During the main-sequence stage, how do stars make energy?
39. What marks the transition of a protostar to star?
40. Name 3 types of stars not on the main sequence.
41. What is a black dwarf?
42. What type of star may become a pulsar?
43. List the steps in the life cycle of a sun-like star.
44. Why might an old main-sequence star have a greater percentage of helium than a younger mainsequence star?
45. What is a nebula?
30.3 & 30.4 – Star Groups & The Big Bang Theory
46. What is a constellation?
47. What is a spiral galaxy?
48. What did Hubble discover that indicated the universe is expanding?
49. Agree or disagree: After the big bang, all the matter and energy in the universe moved outward in
all directions, but now the universe is stable.
50. What is a galaxy?
51. What type of galaxy is the Milky Way?
52. List two pieces of evidence to support the big bang theory.
53. What is the big bang theory?
Review Material
54. What is the Coriolis effect?
55. Why is the ocean called a carbon sink?
56. What 2 factors influence the density of water?
Good Luck!!!