Structure of a Volcano

A Volcano constitutes a vent, a pipe, a crater, and a cone.
*The vent is an opening at the Earth's surface.

*The pipe is a passageway in the volcano in which the magma rises through to the surface during an eruption.
*The crater is a bowl-shaped depression at the top of the volcano where volcanic materials like, ash, lava, and other pyroclastic materials are released.
 *Solidified lava, ashes, and cinder form the cone. Layers of lava, alternate with layers of ash to build the steep sided cone higher and higher.