Across
- 3. Plates that exist in the sea
- 6. An underwater mountain range that forms due to seafloor spreading
- 9. The layer of the earth that is entirely liquid
- 10. The supercontinent that existed 250 million years ago
- 13. The subsystem that contains all of Earth's water
- 15. The subsystem that contains all life
- 16. Plates that slide past each other
- 19. Plates that move away from each other
- 20. The process of matter being moved from one place to another
- 23. A feature that forms due to converging plates in the ocean
Down
- 1. The layer of the earth that is semi-liquid and sits just below the crust
- 2. Rock that is made by compaction and cementation
- 4. The layer of the earth that is in the very middle
- 5. Plates that move towards each other
- 7. The subsystem that contains all gases in the air
- 8. The breakdown of rock from physical or chemical causes
- 11. The outer layer of the earth
- 12. Rock that is made with heat and pressure
- 14. The subsystem that contains all non-living matter
- 17. The process of sediment or rock being laid down
- 18. Plates that exist under the land
- 21. ___________ currents cause matter to cycle in the mantle
- 22. Rock that is made from cooling and hardening magma
- 24. Event that occurs at all plate boundaries