Volcanoes occur when magma comes to the surface of the Earth in a mountain and causes bubbles of gas. These bubbles eventually cause pressure in the mountain to explode lava.
Volcanoes are made up of many parts including the magma chamber, the vent, the side vent, the crater, the cone and the fumarole.
Volcano Facts
Most of the Earth's crust has volcanic origin. Volcanoes erupt, and form mountains and other land forms. Also, the gaseous vapors that come from volcanoes formed the atmosphere.
75% of the world's dormant and active volcanoes are situated in the Ring of Fire.
The name volcano came from Vulcan, the Roman god of fire.
Volcano eruptions can trigger earthquakes, tsunamis, flash floods and mud flows.
There is a volcano in Indonesia that erupts electric blue lava.
80% of volcanic eruptions occur underwater.
Credits:
Created with images by schizoform - "2002 hawaii fast lava flow" • skeeze - "volcano lava flowing" • skeeze - "volcano lava flowing"