Across
- 3. molten rock that issues from a volcano or form a fissure
- 5. the sudden release of stain energy in the Earth's crust
- 7. the liquid layer of the Earth's core
- 8. Andreas fault an active strike
- 9. a fault that does not cause an error
- 11. Wegener a German meteoroligst
- 12. molten rock in the earth
- 15. ancient continental mass in the Northern Hemisphere
- 19. a fast moving currents of hot gas
- 20. large mass of land
- 21. the movement of continents resulting the motion of tectonic plates
- 22. the wearing away of rocks and other deposits
- 23. the inner most layer of the earth
Down
- 1. openings or vents where lava small rocks and steam erupt onto the Earths surface
- 2. a supercontinent that incorporated almost all the landmass on earth
- 4. the hardend exterior of surface part
- 6. a large area of land that existed long ago
- 10. the breaking down of rocks and minerals on the surface
- 13. a scientific theory that explains how major landforms are created
- 14. features of the earth
- 16. a plate boundary is a three dimensional surface or zone
- 17. a crack on the ocean floor
- 18. a mantel peice or shelf
- 21. currents a current in a fluid that results from convection