A volcano might be a mountain that opens downward into a reservoir of molten rock beneath the surface of the world. Unlike most mountains, this unit area is pushed upward, volcanoes unit area vents through this molten rock that escapes to the Earth's surface. Once the pressure of gases in the molten rock becomes too great, an associated eruption occurs. Eruptions can be silent or explosive. There could also be volcanic rock flows, two-dimensional landscapes, toxic gases, and fly rocks and ash that can typically travel several kilometers downwind. Due to their intense heat, volcanic rock flows present great fire risks. volcanic rock flows destroy everything in their path, but enough for people to move away from the approach. Fresh volcanic ash, made from small-grained rocks, can be abrasive, acidic, grainy, gaseous and odorous. Although not immediately dangerous to most adults, acidic gases and ash can damage the respiratory organs of toddlers, the elderly, and people with serious metabolic diseases. Volcanic ash can also damage machinery, as well as...