Across
- 3. Formation of new oceanic crust
- 6. When the plates are spreading away from eachother
- 7. when the lava flow switches in polarity
- 8. Deep valley created by divergent boundaires
- 10. When tectonic plates slide past eachother
- 11. when another plate goes beneath another
Down
- 1. The theory that the earth is made up of plates
- 2. An underwater mountain range formed by plate tectonics
- 4. The movement of continents over geological time
- 5. When all the other coninents were once connected
- 9. When magma rises up creating underwater islands and volcanos that rise to the surface over geological time
- 10. deep underwater oceanic valley