Plate tectonics
Across
- 3. two plates slide against each other
- 6. melted rock on Earth’s surface
- 7. separate
- 8. a slowly flowing layer of solid and melted rock formed by heat and pressure
- 10. continents were joined together in one large landmass
- 11. two tectonic plates grind past each other in a horizontal direction
- 12. the solid outer part of Earth that includes the crust and upper mantle
- 15. It is the only liquid layer, a sea of mostly iron and nickel
- 17. A layer of the earth's crust that lies under the seven continents
- 19. A dropped zone where two tectonic plates are pulling apart
- 20. The innermost layer of the earth, an extremely hot, solid sphere of mostly iron and nickel
- 21. The type of crust lying under the oceans of the world
Down
- 1. collide
- 2. A raised area or mountain range under the oceans formed
- 4. molten hot rock
- 5. An area where oceanic crust and continental crust are colliding
- 9. The border between two tectonic plates
- 13. The process that forms new ocean floor and oceanic crust
- 14. one plate going under another
- 16. the outermost layer of Earth.
- 18. when an oceanic plate sinks underneath a