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Across
  1. 3. An oceanic plate which also happens to be the largest plate on Earth
  2. 6. Either created by erosion or by subduction
  3. 10. The remains of dead animals and plants after long periods of time
  4. 11. Deposit of dead plants compressed and heated over the course of millions of years
  5. 13. A group of islands scattered across a body of water
  6. 14. One of the main metals in the Earth's core
  7. 15. The innermost layer of the Earth, comprised of mostly iron and nickel
  8. 16. Beneath the crust and made mostly of rocks and mineral
  9. 18. The moving of Earth's magma, making tectonic plates too move
  10. 19. Scientist who proposed the continental drift theory
Down
  1. 1. Lie along boundaries of tectonic plates where earthquakes occur frequently
  2. 2. One of the main metals in the Earth's core
  3. 3. Able to be shaped and molded easily
  4. 4. The state of matter where matter is less tightly packed than a solid but not gaseous
  5. 5. A shell mostly made up of solid rocks and minerals
  6. 7. Occur along divergent plate boundaries, where new ocean floor is made
  7. 8. The state of matter where matter is most tightly packed
  8. 9. At the border of divergent plates, and can occur both on land and under water
  9. 12. Occurs when two convergent plates collide
  10. 17. The outer part of the Earth containing the crust and outer mantle