Across
- 3. A rift valley is a linear shaped lowland between several highlands or mountain ranges created by the action of a geologic rift
- 4. molten rock that has been expelled from the earth
- 6. the slipping motion of a plate into the upper mantle
- 7. solid layer of core
- 9. liquid layer of core
- 13. a mountain range in the middle of the Atlantic Ocean that spurts lava
- 14. zone of earth mantle below the
- 17. molten rock in the earths crust
- 19. theory on how major landforms are created
- 20. part of the earth that contains the crust and upper mantle
- 21. tectonic plates that spread apart
Down
- 1. a type of natural disaster that is caused by divergent and convergent boundaries
- 2. tectonic plates that slide against each other
- 5. a type of landform caused by convergent bounderies
- 8. the theory that states that continents move
- 10. tectonic plates that collide
- 11. scientist who discovered continental drift
- 12. a type of natural disaster that is caused by transform boundary
- 15. the process of tectonic plates splitting on the sea floor
- 16. edge where two plates mean
- 18. the movement of energy from one place to another