Earthquakes and Volcanoes

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Across
  1. 1. The top of a mountain or volcano
  2. 7. A plate boundary where two plates move away from each other.
  3. 8. A large pool of liquid rock beneath the surface of the Earth.
  4. 10. Molten rock ejected by volcanoes in the form of a liquid.
  5. 12. The process by which molten material adds new oceanic crust to the ocean floor.
  6. 13. A plate boundary where two plates move toward each other and one moves under the other.
  7. 15. An opening in the Earth's crust through which lava, ash, and gases erupt.
Down
  1. 2. The size of the earthquake.
  2. 3. Boundaries A plate boundary where two plates move away from each other.
  3. 4. Some magma may escape through the side of the volcano, particularly if the main vent becomes blocked.
  4. 5. A plate boundary where two plates move past each other in opposite directions.
  5. 6. Large volcanoes erupted on the seafloor whose tops have emerged above sea level.
  6. 9. A path along the Pacific Ocean characterized by active volcanoes and frequent earthquakes.
  7. 11. Any sudden shaking of the ground caused by the passage of seismic waves through Earth's rocks.
  8. 14. They have a second outlet from which lava and gasses will pummel the Earth's surface.