how+do+volcanoes+work?

media type="custom" key="6147103" A volcano has 4 main areas. It has the main cone, the tube, the hole at the top and the gap between the tectonic plates(see Glossary) where the magma is let in. A volcano is created when the tectonic plates underneath a mountain shift and let in a gap of Magma( see Glossary). The magma as it rises creates a tube through up through the middle of the mountain going vertically from the base to the top and that is how the Lava(see Glossary) raises out of the ground on to the surface.

As the Lava moves up the tube, it melts the rock and that is where the ash and dust comes from. The Lava then follows up out the tube and onto the suface where it starts dystroying anything in iits path. When a volcano is considered Active(see Glossary) it is still erupting(see Glossary).

A volcano that is Dormant(see Glossary) it has not erupted for some years, but could still become active again. When there is a exctinct(see Glossary) volcano it is not erupting and hasn't for many years, and will never erupt again.

Volcanoes occur when they are over fault lines in the tectonic plates. These fault lines are the places where the magma first gets let in. Ring of fire consisting of a line of volcanoes around the pacific plate

The ring of fire(see Glossary) is a string of volcanoes that goes around the Pacific and Nazca plates. All the red dots that you see are all volcanoes and as you can see some of them are under water. The volcanoes that are under the water erupt and cause tsunamis.

As you can see on this map there are several different plates. At the edge of every plate there is a fault line and that is where volcanoes appear. The ring of fire was around since the dinosaurs, but not all of the volcanoes are still active.