Plate Tectonic Vocabulary
Across
- 6. boundary between two tectonic plates moving away from each other
- 7. the mineralized remains of organisms
- 11. upper layer of the earth's mantle, below the lithosphere, in which current convection occurs
- 12. huge pieces of crust that slowly move on the upper ductile part of the mantle
- 14. an underwater mountain system formed by plate tectonics
- 15. melted or molten rock material beneath earth's surface
- 16. deep and narrow depression in the seafloor where the subducted plate moves into the asthenosphere
Down
- 1. very hot, very dense center of earth
- 2. the solid layer of earth between the crust and the core
- 3. rigid outer layer of the earth that is made of loosely connected solid plates that float on top of the asthenosphere
- 4. a depression of earth's surface in which an ocean lies
- 5. the process in which a denser plate is pushed downward beneath a less dense plate when plates converge
- 8. a parallel pattern of rock material found at identical locations on each side of the mid-atlantic ridge reveals rock of the same geologic age and poarity
- 9. boundary that occurs when two tectonic plates move toward each other and collide
- 10. the thin, solid, outermost layer of earth
- 13. the theory that continents were once connected but drifted apart