Volcanoes

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Across
  1. 4. Fast moving avalanches of hot gas, ash, and rock
  2. 5. Large, steep volcanoes that result from explosive eruptions of andesitic and rhyolitic lava and ash along convergent plate boundaries
  3. 7. Very large volcanoes such as the one below Yellowstone that have large and explosive eruptions
  4. 10. Small, steep-sided volcanoes that erupt gas-rich basaltic lavas
  5. 12. A giant wave that is usually caused by an earthquake beneath the ocean floor.
Down
  1. 1. An area of earthquake and volcanic activity that surrounds the Pacific Ocean
  2. 2. Volcanoes common along divergent plate boundaries and oceanic hot spots.They are large with gentle slopes of basaltic lavas
  3. 3. Rising currents of hot mantle material over a hot spot
  4. 6. Tiny particles of pulverized rock and glass.
  5. 8. A vent in Earth's crust through which molten rocks flows
  6. 9. Volcanoes that are not associated with plate boundaries
  7. 11. Molten rock beneath Earth's surface