Across
- 1. rocks that are formed under immense heat and pressure
- 3. the layer of the Earth that is made of liquid iron & nickel
- 4. boundary where plates move towards each other
- 6. the thinnest layer of the Earth
- 7. wearing away and removal of rock
- 9. there are three types of these (also called edges)
- 10. the process of crust re-entering the mantle after sea floor spreading
- 12. breakdown of rock while it remains in one place
- 15. squeezing of sediment by weight of overlying layers
- 19. rocks that are formed when molten rocks cool and solidifies
- 20. boundary where plates move away from each other
- 21. molten rock above the Earth's surface
- 22. molten rock underneath the Earth's surface
- 23. a volcano that has not been active for some time
- 24. the type of weathering done by animals and plants
Down
- 2. boundary where plates slide past each other
- 5. a volcano that will never erupt again
- 8. the layer of the Earth that is made of solid iron & nickel
- 10. rocks that are formed from weathering and erosion followed by compaction and cementation
- 11. the type of weathering done by chemicals
- 13. the reason why the inner core is solid and the outer core is liquid
- 14. "gluing" together of sediment by minerals and crystals
- 16. the only layer of the Earth that is a mix of solid and liquid
- 17. the type of weathering done by temperature or forces
- 18. the place under water where sea floor spreading originates from