How is a volcano form?

Answer 1

There are 5 steps(reasons) on how a volcano is formed. They are the following: -Fissure -Magma realleased -Lava will accumulate the surrounding area -Lava cools,then turns into a solid -A cone will be formed -All the piled up solid lava will now form the VOLCANO
Volcanoes are generally found where tectonic plates are pulled apart or come together. A mid-oceanic ridge, for example the Mid-Atlantic Ridge, has examples of volcanoes caused by "divergent tectonic plates" pulling apart; the Pacific Ring of Fire has examples of volcanoes caused by "convergent tectonic plates" coming together. By contrast, volcanoes are usually not created where two tectonic plates slide past one another. Volcanoes can also form where there is stretching and thinning of the Earth's crust (called "non-hotspot intraplate volcanism"), such as in the African Rift Valley, the Wells Gray-Clearwater Volcanic Field and the Rio Grande Rift in North America and the European Rhine Graben with its Eifel volcanoes.

Volcanoes can be caused by "mantle plumes". These so-called "hotspots" , for example at Hawaii, can occur far from plate boundaries. Hotspot volcanoes are also found elsewhere in the solar system, especially on rocky planets and moons.

Volcanoes form by cracks in the crust of the earth (the outside of the earth). Underneath the earth there is magma (molten rock underneath the earth). The molten comes threw the cracks, and makes a volcano when it cools down. The volcano can keep erupting and the lava (magma out from the ground) will make the volcano get bigger. So really a volcano is just cooled lava!!!