Volcanoes

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Across
  1. 3. The word volcano originally comes from the name of the ________ god of fire, Vulcan.
  2. 8. Volcanic activity that occurs within a plate.
  3. 10. Magma is a complex mixture that contains partly melted ______ crystals, dissolved gases, and water.
Down
  1. 1. A mass of hotter-than-normal mantle material.
  2. 2. Most volcanoes form along _______ and convergent boundaries.
  3. 4. Unique volcanic rock that can float in water.
  4. 5. Molten rock beneath the Earth's surface.
  5. 6. The formation of magma depends on several factors, including heat, pressure, and _____ content.
  6. 7. When a volcano has recent historical activity but now is quiet it is called this.
  7. 9. The long belt of volcanoes that circles much of the Pacific ocean.