Across
- 7. What was the earth called before it was Earth's continent.
- 8. When the floor sinks beneath the ocean
- 9. Where deep valleys form.
- 11. The Plates come together.
- 12. When the Plates come together
- 13. it back into the mantle.
- 14. a trace of a ancient organism that has turned to rock.
- 15. When the Earth crust breaks and the rocks slip by each other.
Down
- 1. Long chains from the mountains on the ocean floor.
- 2. When the ocean sinks into the mantle.
- 3. Earth is slow and in constant motion.
- 4. Earth's major tectonic plates
- 5. Plates slid against each other
- 6. Continents were slowly moving over earth's surface.
- 10. New Strips of crust appear and old crust leaves.