Across
- 1. boundary a place where two plates slip past each other, moving in opposite directions
- 4. Rocks forming due to heat and pressure
- 7. One plate going under another plate
- 11. Rock Formed from compaction and cementation of sediments
- 12. crust the relatively thick part of the earth's crust that forms the large landmasses.
- 13. Rock Formed from the crystallization of magma
- 14. The breaking down of rocks
- 15. The layer of hot, solid material between Earth's crust and core.
- 18. The process of moving broken rock (sediment) from one place to another
- 21. Going in different directions
- 24. The soft layer of the mantle on which the tectonic plates move
- 26. an important part of something, a characteristic
- 27. A naturally occurring solid mixture of one or more minerals or organic material
- 28. Earth's outermost layer.
- 30. crust thinner, more dense, younger crust making ocean floor
Down
- 2. Valley A deep valley that forms where two plates move apart
- 3. ridge The longest underwater mountain chain in the world.
- 5. Includes sand, pebbles, bones, and shells
- 6. A break in the earth's crust
- 8. coming together
- 9. drift The hypothesis that the continents slowly move across Earth's surface.
- 10. tectonic A theory stating that the earth's surface is broken into plates that move.
- 16. one thickness above or between other thicknesses
- 17. Center of the earth
- 18. proof
- 19. Layers found in sedimentary rock
- 20. A rigid layer made up of the uppermost part of the mantle and the crust.
- 22. Being forced to the surface
- 23. Cycle The process in which rocks undergo change
- 25. Rock Formed from heat and pressure
- 29. A deep, steep-sided canyon in the ocean floor.