Plate Tectonics
Across
- 5. A theory that the Earths plates are driven in slow constant motion from convection currents in the mantle.
- 8. Idea the continents slowly moved over the Earth’s surface.
- 9. Process by which the plates separate from each other.
- 12. When new material is added onto the Ocean floor.
- 13. Only boundary that forms mountains.
- 14. Breaks in Earth’s crust.
- 15. A deep valley that is formed by divergent boundaries.
- 16. rock that is very hard but solid but also part of Earth’s system.
- 18. Mountains that are formed in the middle of Oceans from seams.
- 20. conditions of weather also helped Wegener learn more about Pangaea.
Down
- 1. Process that works with the sea floor spreading as if they were a giant conveyor belt.
- 2. Remains left from organisms that have died out.
- 3. A land feature that is formed by convergent boundaries and was used to support Wegener’s idea of Pangaea.
- 4. German scientist who hypothesized that the Earth’s continents fit together like a puzzle.
- 6. Process by which the plates move past each other.
- 7. An idea that the continents were together at one point into a supercontinent.
- 10. Process by which the oceanic crust bends downwards.
- 11. Equipment that helps scientists map the ocean floor.
- 17. transfer of heat from a fluid.
- 19. Belongings of Earths 3 boundaries.