What Are Volcanoes?

A volcano is an opening, or rupture, in a planet's surface or crust, which allows hot, molten rock, ash, and gases to escape from below the surface. Volcanic activity involving the extrusion of rock tends to form mountains or features like mountains over a period of time.
Volcanoes are generally found where tectonic plates are diverging or converging. A mid-oceanic , for example the mid-atlantic range, has examples of volcanoes caused by "diverging tectonic plates" pulling apart; the Pacific Ring of Fire has examples of volcanoes caused by "converging tectonic plates" coming together. By contrast, volcanoes are usually not created where two tectonic plates slide past one another.

Volcanoes are an opening in the crust of the earth through which molten lava, various gases and ash are released. Volcanoes also refer to the conical mountainous structures created by the materials released from a volcanic eruption. If the pressure of the molten rock and matter beneath the earth's surface becomes excessively great, the rocks followed by gases or lava break free through an opening in the crust of the earth resulting in a volcanic eruption.

The term 'volcano' is known to have originated from 'Vulcano,' a volcanic island in the Aeolian Island, Italy. In fact, about 82 percent of the earth's surface is created from volcanoes. The gases which are released from volcanoes have formed the atmosphere of the earth. Depending upon the intensity and difference in the duration in which they erupt, volcanoes are classified as active, dormant and extinct. There are as many as 500 active volcanoes in the world, with Mauna Loa in Hawaii being the largest active volcano ever (56,000 ft).

They are like the earths pimples in the center of the earth is hot magma and when the pressure builds the earth starts to form a place to release

1.  A vent in the earth's crust through which molten rock, ashes, etc. Are ejected.

2.  A cone-shaped mountain of this material built up around the vent.

A rip in the earths crust witch allows molten rock ash and gasses to come out. Formed by other volcanoes erupting

They r cool things that lava comes out of and r awesome o yeah!!!!

A volcano is an opening, or rupture, in a planet's surface (crust), which allows hot: Magma, ash, and gases to escape from below the surface.

Volcanoes are large landmasses that have an opening at the top in which lava pours out of the top when a volcanic eruption occurs.

Volcanoes r like a Mountain

Volcanoes are very hot

Volcanoes have lava come out of it