Plate Boundaries and Tectonics
Across
- 3. two plates slide past each other
- 6. moves the plate , intense heat from the earth's core
- 8. a continious mass of land with long width and height on the oceanfloor
- 9. the inside layer the most dense
- 10. rigid sections of the lithosphere that moves as a unit
- 12. two plates move toward each other
- 13. the thick part of the earth's crust, not located under the ocean
- 15. a depression in the seafloor produced by subduction
- 17. two plates moving away from eaach other and mostly occur at the mid-ocean ridge
- 18. a break in a rock along which movement has occured
Down
- 1. is the scientist who made the theory on continental drift
- 2. a supercontinent broke apart and the continents drifted to their present posistions
- 4. the middle layer more dense than the crust compose
- 5. describe the rising spread and sinking of gas liquid or molten material
- 7. the thin part of the earth's crust located under the ocean
- 11. the top layer , the least dense layer , composed of the continental and oceanic crust
- 14. is the process by which less dense material rises and more dense material sinks typically driven by temperature
- 16. a mass of molten rock formed a depth including dissolved gasses and crystals