Volcanoes and Tectonics

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Across
  1. 1. Large pieces of Earth's crust that move on the mantle (Two Words).
  2. 3. The layer of semi-liquid rock beneath Earth's crust.
  3. 7. A bowl-shaped opening at the top of a volcano.
  4. 10. A crack in Earth's crust where tectonic plates move.
  5. 12. A place where two tectonic plates slide past each other (Two Words).
  6. 15. Earth's outer layer, made of solid rock.
  7. 16. Molten rock that reaches Earth's surface.
  8. 17. A place where two tectonic plates move apart(Two Words).
  9. 18. A smaller earthquake that follows the main shock of a larger earthquake.
Down
  1. 2. The solid, innermost layer of Earth, made mostly of iron and nickel, and extremely hot (Two Words).
  2. 4. Hot, molten rock beneath Earth's surface.
  3. 5. The process where one tectonic plate sinks below another.
  4. 6. An opening in Earth's surface where magma, gas, and ash can escape.
  5. 8. A large sea wave caused by underwater earthquakes or volcanic eruptions.
  6. 9. A place where two tectonic plates push together(Two Words).
  7. 11. The release of magma, ash, and gases from a volcano.
  8. 13. An area around the Pacific Ocean known for frequent earthquakes and volcanoes (Three Words).
  9. 14. A sudden shaking of the ground caused by movement along faults.