Plate Tectonics
Across
- 2. molten mixture of rock forming substances
- 4. under continents
- 5. valley that runs along the crest of mid ocean ridge
- 7. when molten mixture reaches surface
- 10. theroy that pieces of Earth's lithosphere(plates) have moved.
- 12. flowing liquids(in the core)
- 14. transfer of heat through solid matter as one atom strikes another
- 15. Earth's surface or outermost layer
- 17. plates under oceans
- 18. Earth's moving section we call plates
Down
- 1. transfer of heat by flowing materials such as liqud or gas
- 2. system of underwater mountain ranges
- 3. Earth's thickest and heaviest layer found just below crust
- 6. a weak spot in the crust where molten material comes to the surface
- 8. Earth's center made of mostly metals
- 9. scientists who study earth
- 11. a technology way that mapped the ocean floor
- 13. solid(in the core)
- 16. geologist Harry Hess sugested sea floor spreading in this year
- 19. super mass of all of the continents