Astronomy 101 Chapter 9 Crossword

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Across
  1. 4. High density interior of planet
  2. 6. when an asteroid impacts a planet, the crater is this much bigger than the asteroid
  3. 7. Outer floating layer of a planet
  4. 8. Dark regions on the Moon
  5. 12. Study of differences between geology of planets
  6. 14. This geological process can create mountain regions when plates collide
  7. 16. Wind and water can create this geological process
  8. 18. Process shaping planetary surfaces
  9. 19. One method of interior cooling where hot material rises
  10. 20. Light regions on the Moon
  11. 21. Olympus Mons is located near the _______________ on Mars
  12. 22. This volcano is the size of Arizona, and taller than Mt. Everest!
Down
  1. 1. One method of interior cooling
  2. 2. The Moon is covered in this “powdery soil”
  3. 3. The “blueberries” on Mars contain this mineral
  4. 5. Grand Canyon of Mars
  5. 9. Process by which gravity separates materials
  6. 10. Method of interior cooling
  7. 11. Eruptive process shaping planetary surfaces
  8. 13. Source of internal heat
  9. 15. Represents the outer skin of a planet
  10. 17. One way interiors get hot