Earth's Interior and Plate Tectonics

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Across
  1. 3. Continually adding new materials to the ocean floor
  2. 4. Deep underwater canyons
  3. 6. Breaks in Earths crust
  4. 7. Layer of molten metal materials
  5. 11. The layer of rock that forms Earth's outer skin
  6. 12. Is a large landmass
  7. 14. Part of the mantle that is strong hard and rigid
  8. 15. Plates slip past each other
  9. 16. sections of Earth separated by cracks
  10. 17. Dark,fine-grained rock
  11. 18. Mountain ranges that ran along the middle of some ocean floors
  12. 20. made of mostlty iron and nickel
  13. 21. Dense ball of solid metal
  14. 22. Any trace of an ancient organism
  15. 23. single landmass, about 300 million years ago
Down
  1. 1. Plates move apart, or diverge
  2. 2. Plates come together,or converge
  3. 5. Ocean floor sinks beneath a deep ocean trench and back to the mantle
  4. 8. Rock usually with light colors and has coarse grains
  5. 9. Landmass slowly moved over Earth's surface
  6. 10. Part of the mantle that is less rigid than the rock above
  7. 13. Theory that plates are in slow, constant motion
  8. 18. Part of the mantle that is hot but more rigid
  9. 19. Results from a force pressing on an area