It is known that volcanoes are a natural source of air pollution and these gas can be very dangerous at times. Lava Lava is another type of material that comes from an errupting volcano. Lava is magma that reaches Earth's surface. It is a proven fact that lava can flow at speeds of 30-45 kilometers per hour down steep slopes. Lava comes in two forms, Pahoehoe flows and aa.
Pahoehoe is a type of lava the resemble the twisting braids in ropes.
AA is another form of lava, but this form flows with jagged blocks and sharp, dangerous edges with spiny projections. When a volcano erupts, it produces an assortment of debis that can be scattered for miles. The particles produced from a volcano are known a pyroclastics which means fire fragments. These lava particles can range from fine dust to large pieces. Some of these fragements include ash and dust particles , lapilli, cinders, blocks and bombs.