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