ALL ABOUT VOLCANOES

        Volcanoes happen all over the world. There are many different types of volcanoes.  There is Composite Volcanoes, Shield Volcanoes, Cinder Cones, Spatter Cones, and Complex Volcanoes.  Some are more harmful then others.  A volcano is an opening in earth's surface that often form a mountain when layers of volcanic ash and lava erupt.

    A volcano is constituted of a vent, a pipe, a crater, and a cone.  A vent is the opening at the earth's surface.  The pipe is a way to pass in a volcano, which has the magma rise through to the surface during an earthquake.  The crater is shaped like a bowl depression at the top of the volcanic material, a little like lava, ash, and other pyroclastic materials, and  releases.  A cone is formed from the solidified lava ashes, and cinder. To make the cone higher layers of lava alternate with layers of ash.

    There is also many different types of eruptions like: Hawaiian, Strombolian, Vulcanian, Pelean, Plinan, Submarie, and Hydrovolcanian. A volcano erupts when pressure on a magma chamber forces magma up through the conduit and out the volcanoes vents. When the magma chamber is filled completely, the type of eruption partly depends on the amount of gases and silica in the magma. The silica determines how sticky the water is.  The water provides the explosive potential of steam.

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