Earth’s Interior and Plate Tectonics

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