Voyage to the Center of the Earth

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Across
  1. 4. also known as Vesuvian eruptions.
  2. 7. a bowl-shaped geological formation at the top of a volcano.
  3. 9. are ones where the diameter of the circular to oval crater exceeds 1 mile.
  4. 10. is a geological process that takes place at convergent boundaries of tectonic plates where one plate moves under another and is forced or sinks due to gravity into the mantle.
  5. 12. is a type of volcanic eruption where lava flows from the vent in a relatively gentle, low level eruption.
  6. 14. include a variety of substances given off by active (or, at times, by dormant) volcanoes.
  7. 17. a destructive mudflow on the slopes of a volcano.
  8. 19. a destructive wave of highly compressed air spreading outward from an explosion.
  9. 22. is a large underground pool of liquid rock found beneath the surface of the Earth.
  10. 23. is a major area in the basin of the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur.
  11. 24. an opening that allows air, gas, or liquid to pass out of or into a confined space.
Down
  1. 1. is the part of the earth between the core and the the crust.
  2. 2. hot fluid or semifluid material below or within the earth's crust from which lava and other igneous rock is formed by cooling.
  3. 3. a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust.
  4. 5. is one that could erupt but has not erupted for more than 10,000 years.
  5. 6. side of a volcano.
  6. 8. a sudden outbreak of something, typically something unwelcome or noisy.
  7. 10. is a tall, conical volcano composed of one layer of hardened lava, tephra, and volcanic ash.
  8. 11. hot molten or semifluid rock erupted from a volcano or fissure, or solid rock resulting from cooling of this.
  9. 13. is a volcano that has had at least one eruption during the past 10,000 years.
  10. 15. are relatively mildly explosive, with a volcanic explosivity index of about 2 to 3.
  11. 16. elongated fracture or crack on the Earth's crust from which lava erupts.
  12. 18. that occurs when the pressure of entrapped gases in a relatively viscous magma becomes sufficient to blow off the overlying crust of solidified lava.
  13. 20. a long high sea wave caused by an earthquake, submarine landslide, or other disturbance.
  14. 21. the powdery residue left after the burning of a substance.