Astronomy 101 Chapter 9 Crossword*

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