Volcanic Crossword

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Across
  1. 2. the sudden release of strain energy in the Earth's crust, resulting in waves of shaking that radiate outwards from the earthquake source
  2. 4. a large volcano that has erupted on the seafloor and has emerged above sea level, occurring in ocean basins or on ocean ridges.
  3. 5. a hot or cold mixture of water and rock fragments that flow quickly down the slopes of a volcano.
  4. 7. the part of the Earth's crust that makes up the seafloor
  5. 9. a string of volcanoes and sites of seismic activity, or earthquakes, around the edges of the Pacific Ocean
  6. 10. the process that occurs when two tectonic plates meet at convergent boundaries, and one of the plates moves under the other one due to gravity and differences in density
  7. 15. the layer of granitic, sedimentary, and metamorphic rocks, which form the continents and the areas of shallow seabed close to their shores
  8. 18. fire-born,” meaning that they are formed from the cooling and solidification of molten (melted) rock.
  9. 19. the liquid or molten rock found beneath Earth's surface.
  10. 20. This occurs when plates move towards each other and collide
Down
  1. 1. an oceanic tectonic plate that lies beneath the Pacific Ocean
  2. 3. a special class of mountains
  3. 6. the solid remnants of fires.
  4. 8. a portion of the Earth's mantle that flows like molten plastic despite being solid
  5. 11. openings, or vents where lava, tephra (small rocks), and steam erupt onto the Earth's surface.
  6. 12. plate boundary is a three-dimensional surface or zone across which there is a significant change in the velocity of motion of one lithospheric plate relative to the adjacent lithospheric plate.
  7. 13. the rigid, outermost layer of the Earth's rocks and minerals, which consists of the crust and upper mantle
  8. 14. a hot (typically >800 °C, or >1,500 °F ), chaotic mixture of rock fragments, gas, and ash that travels rapidly (tens of meters per second) away from a volcanic vent or collapsing flow front
  9. 16. molten rock ejected by volcanoes in the form of a liquid
  10. 17. a large plume of hot mantle material rising from deep within the Earth.