Plate Tectonics
Across
- 4. When two continents' plates drift away from each other
- 5. Something to measure earthquakes with
- 6. A plate relationship that form trenches
- 8. A constant ____
- 10. When mantle rises up above the crust
- 12. Something happening over and over again
- 13. A tear in the Earth's plates
- 14. A wedge between two converging plates
- 16. When all continents were connected
- 17. A plate relationship that forms mid-ocean ridges
- 18. People who study the Earth
- 19. ________ plates
Down
- 1. The crust and mantle
- 2. The substance beneath the Earth's crust
- 3. The outermost layer of the Earth.
- 4. The cycle that brings hot mantle up towards the crust.
- 7. Rift valleys where the crust has been stretched and _____ed
- 9. When Africa,Antarctica,India,and South America were connected
- 11. Happens at plate boundaries
- 15. What's between two plates.