Tic-Tac-Tonics

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Across
  1. 2. When a volcano erupts this can come out with lava
  2. 8. The theory that Earth's crust is made up of large pieces that move against each other
  3. 12. an extremely hot area away from plate boundaries, causes volcanoes and are called these
  4. 13. All of these have been sleeping for thousands to millions of years
  5. 17. When plates hit each other with the same density it results in this
  6. 18. The theory that all plates were connected but drifted apart slowly over time
  7. 20. When layers of organisms and rock layers are found, giving you a timeline of when they were alive
  8. 21. When two plates slide past each other
  9. 22. Low area's of Earth's crust filled with seawater
  10. 23. extremely hot molten liquid
Down
  1. 1. These are measured on the Richter scale; the highest at 8 is total destruction
  2. 3. When molten rock explodes into the air
  3. 4. When two plates move away from each other
  4. 5. areas where magma heat water and shoot hot water into the air
  5. 6. techtonic plates move on top of this
  6. 7. super continent that joined all plates over 300 million years ago
  7. 9. When younger layers of rock sit on top of older layers
  8. 10. The name for mineralized organisms
  9. 11. A deep and narrow space on the seafloor where the plates are moving downward
  10. 14. When two plates move towards each other and hit
  11. 15. The process of a heavier plate pushing downward on another plate
  12. 16. A big piece of crust that moves on the upper part of the mantle
  13. 19. When plates shift suddenly and release stored energy