Across
- 2. molten rock from melting plates
- 5. a volcano that is not currently erupting but may erupt in the future
- 8. less dense crust that makes up land masses
- 10. a long narrow valley formed when tectonic plate diverge
- 12. inner most layer of the Earth
- 13. plate boundary where plates push together
- 18. a volcano that is not, and will not erupt again.
- 19. deep points in the ocean formed when tectonic plates converge
- 21. process of a denser plate being pushed under a less dense plate and then melting
- 22. magma that reaches the Earth’s surface
- 23. machine used to detect and record earthquakes
- 24. shaking of the ground that occurs when plates move
- 25. a breaks in the Earth’s crust along which tectonic plates slide
- 26. plate boundary where plates slide past each other without creating or destroying crust
Down
- 1. an opening in the Earth’s crust that allows lava, ash and gases to escape.
- 3. under water mountain ranges that form due to rising magma
- 4. responsible for the movement of magma within the mantel
- 6. layer of the Earth below the crust where convection current occur
- 7. waves of energy that travel through the Earth away form an earthquake
- 9. type of plate boundary where tectonic plates pull apart
- 11. layer upon which tectonic plates move
- 14. type of dense crust found under the ocean
- 15. layer of the Earth made up of the crust and the upper mantel.
- 16. a stationary source of magma located away from a plate boundary through which magma can reach the Eart’s surface
- 17. the theory that explain the movement of the Earth’s tectonic plates over time
- 20. a large depression formed when a volcano erupts and collapses