Plate Tectonics
Across
- 2. earths magnetic field reversals
- 5. the smallest of all plates
- 7. where roughly 80% of earths volcanoes lie
- 8. the theory that tried to explain why the continent moved before plate tectonics
- 12. the largest of all plates
- 13. consists of the crust and the upper mantle
- 15. the number of major plates
- 17. a type of boundary where two plate come together
- 18. a place where lithosphere descends into the mantle
Down
- 1. example of seafloor spreading and a rift zone
- 3. the scientist who proposed continental drift
- 4. ancient magnetism preserved in rocks
- 6. an instrument used to study earthquakes
- 9. a type of boundary where two plates slide past each other
- 10. allows for the movement of the lithosphere
- 11. a type of boundary where two plates move apart
- 14. ancient supercontinent before it was split apart
- 16. caused by the rising of mantle material to form islands and volcanoes