A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that
allows hot lava .... When it does reach the surface, a volcano is formed. Typical ...
Deep inside Earth, between the molten iron core and the thin crust at the surface,
there is a solid body of rock called the mantle. When rock from the mantle melts ...
Volcanoes are formed when magma from within the Earth's upper mantle works
its ... Why do volcanoes erupt? ... Why does lava take a long time to cool down?
www.ask.com/youtube?q=How Do Volcanoes Form&v=6Z4as_imJfM
Jun 22, 2011 ... How Volcanoes Form. Myandyourutube .... wait,how is it formed?. Read more.
Show less. Reply 1 ... I have to do a report xD. Read more.
We do know that the magma comes from partial melting within the upper mantle ,
probably from depths not too much greater than 100 km. The actual source of ...
Where do Volcanoes occur? ... These volcanoes form classic cone shapes. ...
This sequence forms a volcanic chain such as that currently found in the
There are a few continental ridge areas, where the magma does spew out onto
land; but ... If this happens, the flowing magma (now called lava) forms a volcano.
Volcanoes form when magma reaches the Earth's surface, causing eruptions of
lava and ash. They occur at destructive (compressional) and constructive ...
Some volcanic eruptions are explosive and other are not. ... When hot volcanic
materials mix with water from streams or melted snow and ice, mudflows form.
A volcano forms when a vent in the Earth's crust allows magma to well up from
below. The magma fills a void underneath the surface, and when it builds up ...