Crossword Puzzle
Across
- 2. this theory helps geologists predict where volcanic and earthquake activity is going to occur
- 5. several of these make up the East African rift system
- 6. _______ ______ in the magma drive plate tectonics
- 10. all lands
- 11. Glossopteris Mesosaurus, and Lystrosaurus are examples of a _______
- 12. these are formed by subduction
- 14. ______ is a silicate liquid
- 15. Wegeners hypothesis
- 17. this person studied the physics of space and its environment in space
- 19. what do seams form?
- 20. these are pieces of the Earth's lithosphere
Down
- 1. this is made up of granite, sedimentary, and metamorphic rocks
- 3. a _______ boundary can happen in three different ways
- 4. a _______ boundary occurs along the mid-ocean ridge where new crust gets added
- 7. this is made up of mafic rocks or sima
- 8. San Andreas fault is an example of a ______ boundary
- 9. these may be vertical, horizontal, or inclined at any angle
- 13. This adds more crust to the ocean floor
- 16. a large area of land
- 18. sea-floor spreading and ______ move the ocean floor