Across
- 2. buildup of volcanic explosion remains.
- 5. cinders, small beads to walnuts size pyroclastic material.
- 7. volcano with broad gently sloping balsaltic lava
- 9. opening to air surfaces in which molten rock gases are released.
- 11. increases with depth in earth's layers.
- 15. large and dangerous volcanoes.
- 16. substance's resistance to flow.
- 18. magma that is outside of a volcano.
- 19. formed by hardened lava that was in a vent.
- 20. greatest volume of volcanic rock is produced along the mid-ocean ridge plate.
- 21. small volcanoes.
- 22. if not right rock cannot liquify.
Down
- 1. are ejected from volcanic explosion.
- 3. water vapor and carbon dioxide in magma/lava.
- 4. slow upward magma movement.
- 6. volcanic activity that occurs within a plate away from a plate boundary.
- 8. formed from continuous small eruptions.
- 10. helps the melting process of rock.
- 12. 64mm diameter of hardened lava.
- 13. air filled lava.
- 14. lava that is more fluid.
- 17. big depression circular formed craters.