Volcano

The word volcano is derived from the name of Vulcano, a volcanic island in the Aeolian Islands of Italy whose name in turn comes from Vulcan, the god of fire in Roman mythology. The study of volcanoes is called volcanology, sometimes spelled vulcanologyA volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.Earth's volcanoes occur...

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Why do volcanoes-erupt

There is a lot more to volcanic eruptions tha meets the eye – they are complex, diverse and caused by a multitude of events. Directly underneath the Earth’s crust there are layers of molten rock, which, because of the high temperatures at the core, are melted to form magma.Magma contains various gases – predominantly carbon dioxide, water vapour and sulphur dioxide. It is stored in magma chambers that are sealed beneath a lid of solid rock. Due to...

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