Across
- 3. a type of plate boundary where the plates slowly move apart from each other.
- 4. a type of fault where the crust moves sideway past each other.
- 6. the process in which the crust pushes downward into the mantle at a fault line.
- 9. slip A type of plate boundary where the plates move horizontally past each other.
- 11. oceanbottom mountain ranges split down the middle by a deep crack.
- 13. the uppermost solid part of earth's crust.
- 15. currents circulatory patterns of heat in the magma believed to be the driving force behind plate movement.
Down
- 1. A type of plate boundary where the plates slowly collide into each other.
- 2. The branch of geology that deals with the movement that shapes the earth’s crust.
- 5. Another name for the deep crack splits fault-block mid-ocean ridge mountains.
- 7. the preserved remains of ancient once-living organisms .
- 8. V-shaped valleys that are the deepest parts of the oceans where subduction occurs.
- 10. A large segment of earth's crust that slowly moves.
- 12. A German scientist who was the first person to build a scientific case to support the theory of continental drift.
- 14. floor spreading A multi-word term used to describe the movement of oceanic crust at a divergent boundary.