Earth

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Across
  1. 2. covers most of the earth's surface
  2. 4. low land between hills or mountains
  3. 5. earth's path around sun
  4. 6. what the earth does on it's axis
  5. 7. layer of the earth made of melted rock
  6. 8. when the earth moves around the sun
  7. 9. layer of the earth at the center
  8. 11. thinnest layer of the earth made mostly of solid rock
  9. 12. Australia is an _______ and a continent.
  10. 14. deep narrow passage with steep sides and a river flowing through it
  11. 16. moving of rocks, soil, or sand on the earth's surface
  12. 17. learn about the earth's crust by digging holes and studying rocks
  13. 19. melted rock that comes out of a volcano
Down
  1. 1. breaking down of rock into smaller pieces by wind, water, ice, or plants
  2. 3. what happens when large areas of the earth's surface shake and move
  3. 9. largest areas of land on the earth's surface
  4. 10. large bodies of salt water
  5. 13. lakes are large bodies of ______ water
  6. 15. what happens when the earth's crust opens and lava flows out
  7. 18. landform surrounded by water