Volcanoes are mountains that form when the magma from the earth to the surface. Volcanoes can be classified according to whether the magnitude of the eruption is terrible or calm, and the type of material that is spewed out during eruptions.
When it erupts, the volcano emits lava, volcanic bombs, slag, ash, volcanoes, gas and steam panag. The material released by the volcanic eruption has the existing properties of other stones. The volcanoes formed the result of a stone-ty fluid collected beneath the earth's crust. The extremely hot temperature under the earth's crust causes the rock-ty to become liquid. This rock-ty known as magma.