Mmmm Rocks

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Across
  1. 2. first photosynthetic bacteria found in fossil record
  2. 5. a rock formed by magma
  3. 6. when the Earth’s crust wasn't solid
  4. 7. rock that changes from heat and pressure
  5. 11. fine pieces of rock created by erosion
  6. 13. between the crust and the core
  7. 14. the high heat turning rock to liquid
  8. 17. the eon with the first
  9. 20. layers of rock
Down
  1. 1. lava flow spouts to create new mountains
  2. 3. the center of the earth
  3. 4. plates shift to create mountains
  4. 8. force from gravity
  5. 9. When the first signs of life appeared
  6. 10. a rock formed from sediments
  7. 12. hot melted rock under the crust
  8. 15. breaking down rocks by air or water
  9. 16. a break in the crust
  10. 18. the earth's surface
  11. 19. an organism turned to rock by pressure and time