Across
- 5. Rock, basalt under the ocean
- 7. Plates that move or pull apart from each other
- 8. Thin layer in comparison to other three layers
- 9. Cycle of heating, rising, cooling, and sinking
- 10. Plates that slide past each other
- 12. The crust and upper mantle are combined
- 16. Less dense than oceanic crust
- 18. Plastic like layer below the lithosphere
- 19. When rock breaks and moves along surfaces
- 20. They occur when hot magma, solids,and gas erupt onto Earths surface
Down
- 1. All land
- 2. Portion of the Earths crust that lies beneath ocean waters
- 3. A movement of the ground that occurs when rocks inside the Earth break suddenly
- 4. Continents have slowly moved to their current locations
- 6. Oceanic crust is destroyed
- 11. earths surface rising, a large steep hill
- 13. Earths crust and upper mantle are broken into sections
- 14. Plates that come together or collide
- 15. Theory that combined continental drift and seafloor spreading
- 17. Largest layer of the Earth