Across
- 5. movement of magma due to differences in density
- 6. plate boundaries that slide against one another
- 9. region where more dense oceanic crust goes under less dense continental crust
- 11. movement of plates due to rising magma that pushes older portion away
- 12. plate boundaries that move away from one another
Down
- 1. region where magma rises as the older plates are pushed apart
- 2. theory that the lithosphere is broken up into tectonic plates
- 3. plate boundaries that move towards one another
- 4. Theory that the continents are in constant motion
- 7. remains of once living organisms
- 8. Most well-known supercontinent
- 10. First to propose theory of continental drift