Volcanoes

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Across
  1. 2. a volcano that has recent historical activity but now quiet is called this.
  2. 4. magma is a complex mixture that contains partly melted ______ crystals, dissolved gases, and water.
  3. 7. long belt of volcanoes that circles much of the Pacific Ocean.
  4. 8. A unique volcanic rock that can float in water.
  5. 9. The word volcano originally comes from the name of the ______ god of fire, Vulcan.
  6. 10. the formation of magma depends on several factors, including heat, pressure, and _____ content.
Down
  1. 1. molten rock beneath Earth's surface.
  2. 3. most intraplate volcanism occurs where a mass of hotter-than-normal mantle material rises toward the surface.
  3. 5. most volcanoes form along ________ and convergent boundaries.
  4. 6. Usually located where tectonic plates meet.