Across
- 3. The supercontinent that broke apart over million of years
- 5. Compositional layer made up of the inner and outer core
- 8. happens at mid-ocean ridges
- 9. divide
- 12. happens at convergent boundaries
- 15. The Earth feature found on the ocean floor at divergent boundaries
- 16. happened at the end of eons when all of a species died
- 17. A physical layer of the mantle
- 22. Earth's broken crust
- 23. discovered by Harry Hess and proves that continents spread apart over time
- 24. The process by which new lithosphere is created
- 26. Molten rock in the mantle
Down
- 1. core Made of solid iron
- 2. scientist who proposed the Continental Drift Theory
- 4. The uppermost plastic layer of the mantle
- 6. The compositional layer that includes the lithosphere and asthenosphere
- 7. Occurs when denser oceanic lithosphere slides under continental lithosphere
- 10. A unit of geologic time in which eras are divided
- 11. happens when hot Earth material rises and cools in Earth's mantle
- 13. The layer of Earth on which we live
- 14. Collide
- 18. The largest division of geologic time
- 19. The place where plates meet
- 20. A subdivision of a geologic period
- 21. slide
- 25. A unit of geologic time that includes two or more periods