geo - nav

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Across
  1. 3. sea sickness
  2. 6. under the surfis of of earth
  3. 8. hollow rock lined with crystals
  4. 9. baked earth
  5. 10. travel around the earth
  6. 14. sailing, ships, and sailors
  7. 16. region
  8. 17. study of the earth
  9. 18. fleet of ships
Down
  1. 1. big an-of for ships to go threw
  2. 2. person trained to go into space
  3. 4. steer a ship
  4. 5. science of the earth
  5. 7. alien
  6. 10. a soviet trained to go into space
  7. 11. almost completely surrounded by land
  8. 12. person who studies the regions of the earth
  9. 13. person who took part of california gold rush
  10. 15. a raised flat mound of dirt