Earth's Layers and Plate Tectonics Crossword Puzzle

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Across
  1. 2. The deformation of the crust
  2. 4. ___ is made by sea floor spreading
  3. 8. The layer of the mantle that allows the plates to slowly move on top of it
  4. 10. Sea floor spreading often causes the ____ of oceanic crust when it hits continental crust
  5. 14. When ocean crusts converge, they often form a ____ which can be very deep
  6. 15. Plate boundary caused by plates moving away from each other
  7. 16. The process of continents slowly breaking apart and moving away from each other
  8. 18. Hot magma ____ and then falls as it cools, causing plates to move in the lithosphere
  9. 19. Dense oceanic crust is often made of dense _____ which subducts under the continental crust made of mostly granite
  10. 20. Layer of Earth composed of molten nickel and iron
  11. 21. Hot material in the mantle
Down
  1. 1. The movement of magma in the mantle that causes tectonic plates to move
  2. 3. The plate boundary created when plates crunch into each other
  3. 5. ___ are common on divergent boundaries because magma comes up from the mantle
  4. 6. Supercontinent that was made up of all the other continents
  5. 7. The thinnest layer of the Earth, made of silicon and aluminum
  6. 9. Made up of the crust and upper part of the mantle
  7. 11. Both density and pressure ____ as you go further toward the center of the Earth
  8. 12. The thickest layer of the Earth, contains magma
  9. 13. Solid Layer of the Earth that is solid due to pressure from the outer core
  10. 17. Plate boundary created when the plates slide past each other