Across
- 2. the rigid outer part of the earth, consisting of the crust and upper mantle.
- 6. when two tectonic plates move away from each other
- 8. an enormous submarine mountain chain that extends down the axis of the Atlantic
- 11. an area on Earth where two or more lithospheric plates collide.
- 12. formed by divergent plate boundaries, located along mid-ocean ridges
- 13. earth before the drift
- 14. gradual movement of continents across the earths surface over time
- 15. an underwater mountain range, formed by plate tectonics
Down
- 1. long, narrow depressions on the seafloor
- 3. a small tear in the ocean floor especially at or near a mid-ocean ridge
- 4. scientific theory that explains major landforms
- 5. oceanic lithosphere being recycled into the Earth's mantle at convergent boundaries.
- 7. a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity
- 9. German polar researcher, geophysicist and meteorologist
- 10. places where plates slide sideways past each other