Landforms, Plate Tectonics, Volcanoes, Earthquakes and Tsunami's

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 a volcano that is no longer active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