Plate Tectonics
Across
- 4. layer of Earth below the lithosphere that flows like a liquid
- 5. pieces of rock that have been weathered
- 9. the reason something has occurred or is occurring
- 10. primary layer where plants and organisms live
- 14. occur along plate boundaries
- 15. the oceanic crust and the upper mantle
- 16. type of crust that is made up mostly of granite and is less dense
- 22. rock that requires heat and pressure
- 23. rock that is formed when lava cools and hardens
- 25. the only liquid layer of Earth
- 26. Father of Continental Drift
- 28. two events happening at the same time, but not causing one
Down
- 1. largest layer of Earth
- 2. large pieces of crust that are constantly moving
- 3. natural process that breaks down rock
- 6. Earth's supercontinent
- 7. top layer of soil made up of living and decomposed materials
- 8. the theory that the continents were once a giant landmass and have slowly drifted apart
- 11. type of crust that is made up mostly of basalt and is more dense
- 12. solid layer of rock
- 13. can be found in sedimentary rock
- 16. thinnest layer of Earth
- 17. the center of the Earth
- 18. process in which oceanic crust sinks below the less dense continental crust
- 19. hot molten rock
- 20. occurs along mid-ocean ridges
- 21. cycle that occurs in the mantle, where heated material rises then cools and sinks
- 22. tallest mountain in the Himalayas
- 24. rock with many layers
- 27. natural forces that move rocks