Across
- 3. another word for a composite volcano
- 6. the process where matter works in a circular motion to transfer heat in the mantle and cause plates to move
- 7. the part of Earth that contains all living organisms
- 9. a type of volcano that produces low, runny lava that spreads farm from the source and forms a volcano with gentle slopes
- 11. the scale used to measure how damaging an earthquake is
- 14. Earth's system that contains all land
- 15. the part of Earth that holds all gases
- 16. Earth is made from these plates
- 19. the theory that Earth's plates were connected at one time
- 20. a place where lava frequently erupts at the surface, independent of plate boundary processes
Down
- 1. molten mixture of rock-forming substances, gases, and water from the mantle
- 2. the ancient city completely decimated by a volcano
- 4. a structure that forms in Earth's crust when molten material reaches Earth's surface
- 5. a volcano that is no longer active
- 8. the part of Earth that contains water, including water cycles that work through the atmosphere
- 10. a scientific word for Earth's crust
- 12. loose ashy material found in volcanoes and during eruption
- 13. Most of these happen in the "Ring of Fire"
- 17. Earth's thinnest layer
- 18. an example of this might be a delta