Plate Tectonics
Across
- 1. Type of plate boundary that destroys things
- 9. This boundary can form a rift valley
- 11. The pieces of earth’s lithosphere
- 12. The part of the crust made of granite
- 15. What happens at a transform boundary
- 16. The idea that continents slowly move over the Earth’s surface
- 19. One of the items in the earth that helped prove that Pangea existed
- 20. The adding and widening of Earth’s oceans
Down
- 2. The process of one plate sinking underneath another
- 3. What Ocean floor sinks into back to the mantle
- 4. The part of the ocean floor that lava comes out of
- 5. The part of the crust made of basalt
- 6. What oceanic and continental plates create on a convergent boundary
- 7. What two continental plates create on a convergent boundary
- 8. Cracks in Earth’s crust after plates rub against each other
- 10. A theory about seafloor spreading, Earth’s plates and the plates motion
- 13. When subduction takes place it happens at a __________ boundary
- 14. Part of the pattern created on the ocean floor
- 17. A deep valley formed by plates moving away from each other
- 18. The one continent that existed millions of years ago