Across
- 5. Crust that is under the ocean.
- 6. Valleys that are formed by Divergent boundarys.
- 7. Crust above water.
- 12. A rupture in Earths crust that alows magma to flow through it.
- 14. Tectonic plates that are moving away from each other.
- 15. When new oceanic crust is formed becuse magma from the mantle hardens and becomes new rock.
- 16. A trasform fault in California.
- 18. Where one Tectonic plate slides under another one and goes to the mantle.
- 19. Tectonic plates that are sliding past each other.
- 20. A therory in which the earth is divided among several plates that float on the mantle.
Down
- 1. Earths crust and upper mantle.
- 2. The "plates" that earths crust is made of.
- 3. Tectonic plates that move towards each other.
- 4. A underwater mountain range formed by plate tectonics.
- 8. The gradual movement of the continents across the Earth's surface.
- 9. Sudden shaking of the earth's crustdue to transform boundarys.
- 10. A mid-ocean ridge in the middle of the Alantic Ocean.
- 11. Currents in the Earth's mantle that move the Tectonic Plates.
- 13. A supercontinent that exsisted when all plates where one.
- 17. The man who came up with the theroy of Plate Tectonics.