Plate Tectonics
Across
- 3. Inner layer
- 4. the remains or impression of a prehistoric plant or animal
- 7. the rigid outer part of the earth
- 8. a long high sea wave caused by an earthquake
- 10. a slab of solid rock
- 13. moving closer together
- 14. make a marked change
- 15. layer between crust and core
- 17. moving away
- 18. a long narrow natural elevation or striation
- 19. the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate
Down
- 1. soft layer of the mantle
- 2. the bending of rock layers
- 5. an opening in Earths crust where lava or volcanic ash can escape
- 6. outermost solid layer
- 9. a large natural elevation of the earth's surface
- 10. a supercontinent that incorporated almost all the landmasses on Earth
- 11. a sudden violent shaking in the ground
- 12. a long, narrow ditch
- 13. any of the world's main continuous expanses of land
- 16. Earth's lithosphere pulls apart to form long, narrow, faulted rift valleys and rift zones