Across
- 3. supercontinent named by Wegener
- 6. two plates that slide past
- 7. theory of tectonic plates
- 8. came up with the theory of seafloor spreading
- 9. originated the theory of continental drift
- 10. theory of Alfred Wegener
Down
- 1. two plates that collide
- 2. Harry Hess’ hypothesis
- 4. two plates that separate
- 5. individually sites of upwelling material