Volcanos are openings on the Earth's surface where molten rock, debris and gasses are emitted from the Earth's interior.
A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that
allows hot lava, volcanic ash, and gases to escape from a magma chamber ...
Volcanoes are awesome manifestations of the fiery power contained deep within
the Earth. These formations are essentially vents on the Earth's surface where ...
Volcanoes are as dangerous as they are majestic. Over 50 eruptions rock our
planet every year. This video helps you understand what causes volcanoes to
Feb 20, 2013 ... A volcano is an opening in Earth's crust where magma breaks through, raining
down molten rock, ash and gases. There are several types of ...
Volcanoes are formed when magma from within the Earth's upper mantle works
its way to the surface. At the surface, it erupts to form lava flows and ash deposits
Feb 27, 2016 ... Monitors volcanoes and collects scientific information on volcanoes in the United
States and elsewhere to reduce the risk from volcanic activity.
Unlike most mountains, which are pushed up from below, volcanoes are vents
through which molten rock escapes to the earth's surface. When pressure from ...
Brings modern and near real-time volcano information.
Active volcanoes worldwide - short information / VolcanoDiscovery.