- Jun 3, 2020
A Volcano is a rupture on the surface of the Earth (or some other planet), which serves as a vent to allow hot lava, volcanic ash and gases to escape from the subsurface magma chamber. The volcanoes occur on Earth due to plate tectonics. As the crust is broken into 17 major, rigid tectonic plates that float on a hotter layer in the mantle, the magma finds opportunity to escape to the surface where the tectonic plates are diverging or converging. Apart from them, volcanism occurs near mantle plumes which are direct vents for magma like hot water springs.