Alex's Awesome quest crossword puzzle

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Across
  1. 7. is a large, rigid piece of earth's lithosphere (the crust and and upper mantle
  2. 12. A plate boundary where two plates move away from each other
  3. 15. dark igneous rock that forms when lava cools quickly at earth's surface
  4. 16. The process by which oceanic crust sinks beneath a deep ocean trench and back into the mantle at a convergent plate boundary
  5. 18. plates move and float on it
  6. 20. layer that the plates are in made up of solid rock
  7. 21. The shaking that results from the movement of rock beneath earth's surface
  8. 22. _____ is a meteorologist
  9. 23. A dense sphere of solid iron and nickel at the center of earth
  10. 24. hard light colored igneous rock that forms when magma cools slowly beneath earth's surface
  11. 25. A plate boundary where two plates move toward each other
Down
  1. 1. An undersea valley that represents one of the deepest parts of the ocean
  2. 2. _______ helped create the first detailed maps of the ocean floor
  3. 3. a single massive supercontinent that once included almost all of earth's land joined together
  4. 4. is the thin, dense outer layer of earth's crust that lies beneath the oceans
  5. 5. a curved chain of volcanoes over a subduction zone
  6. 6. The layer of hot, solid material between earth's crust and core
  7. 8. These occur in the mantle and move the plates
  8. 9. Vibrations that travel through earth carrying the energy released during an earthquake
  9. 10. An undersea mountain chain where new ocean floor is produced
  10. 11. The process by which molten material adds new oceanic crust to the ocean floor
  11. 13. a crack, split, or opening in the ground
  12. 14. _____ is hard and rigid thinnest layer
  13. 17. A plate boundary where two plates move past each other in opposite directions
  14. 19. A layer of molten iron and nickel that surrounds the inner core of earth