A volcano begins as melted rock (magma) which rises from deep inside the earth
toward the surface. As the gas-filled magma rises ...
Nov 29, 1999 ... When a part of the earth's upper mantle or lower crust melts, magma forms. A
volcano is essentially an opening or a vent through which this ...
Jan 6, 2016 ... A team of volcanologists led by the University of Liverpool have released a
perhaps controversial Nature study on the causes of volcanic ...
Jun 30, 2016 ... A volcano is a geological feature of the earth where an opening allows magma to
escape from the mantle of the planet.
www.ask.com/youtube?q=what makes volcanoes erupt&v=ShOFQ2h2fws
Jun 19, 2014 ... Volcanoes form when magma from the earth's interior is able to make its way to
the surface, via a vent. This is usually associated with plate ...
www.ask.com/youtube?q=what makes volcanoes erupt&v=-kQwudeT3ww
Jun 29, 2013 ... A quick and fun cartoon lesson about volcanoes. Great for teachers and students-
hope you guys enjoy! Be sure to subscribe if you like it, there ...
May 26, 2016 ... Volcanic eruptions are driven by a combination of mechanisms, ... What is it
exactly that makes molten rock rise from the Earth's interior and ...
A secondary school revision resource for GCSE Geography covering key facts
about volcanoes and volcanic eruptions.
Where plates move away from each other at spreading or divergent plate
margins, volcanic eruptions are gentle extrusions of basaltic lava. Most of these
A volcano is a landform (usually a mountain) where molten rock erupts through ...
The inner layer is called the core. volcano What causes volcanoes to erupt?