Astronomy 101 Chapter 9 Crossword

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