Across
- 1. spreading When divergent plates cause magma to solidify into new seafloor
- 3. Alfred Wefgener's theory
- 4. Edges of plates where geologic activity occurs
- 6. When two plates divide
- 9. When two plates collide
Down
- 1. One plate sliding underneath another due to convergence
- 2. Currents in the mantle that cause plates to move
- 5. Mountain that shoots out lava
- 7. When two plates slide past each other
- 8. Ancient supercontinent that broke apart