Volcanoes

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Across
  1. 4. occurs when pressure drops
  2. 5. a mountain formed of lava or pyroclastic material
  3. 6. always be _______
  4. 7. volcanic activity that occurs within a plate
  5. 8. forms in the crust and upper mantle when solid rock partially melts
  6. 9. the plates divide
  7. 10. volcanoes that form far from plate boundaries
Down
  1. 1. chain of volcanoes in the Pacific
  2. 2. earths natural texture increases with depth
  3. 3. the plates move together