plate tectonics

2. ocean split down the middle by a big crack
3. the remains of ancient living animals
4. a type of fault where the crust moves sideways part each other
7. plate boundary where the plates slowly collide together
10. the process in which the crust pushes downward into the mantle at a fault line.
11. circulatory patterns of heat in the magma believed to be the driving force behind plate movement.
12. earths crust the slowly moves

1. the movement of the ocean floor at a divergent
5. the uppermost solid part of the earths crust
6. V-shaped valleys that are the deepest parts of the oceans where subduction occurs.
8. a type of plate boundary where the plates slowly move apart from each other.
9. another name for the crake in the mid-ocean ridge mountains