These float on a hotter softer layer in its mantle. If the erupted magma contains a high percentage 63 of silica the lava is called felsic.
What is a volcano definition eruptions volcanoes.
Description of a volcano. Volcano definition a vent in the earth s crust through which lava steam ashes etc are expelled either continuously or at irregular intervals. A volcano is a mountain that has lava hot liquid rock coming out from a magma chamber under the ground or did have in the past. Volcanoes are spectacular events and because of this they have found their way into the plot of many.
Felsic lavas dacites or rhyolites tend to be highly viscous not very fluid and are erupted as domes or. Volcano vent in the crust of the earth or another planet or satellite from which issue eruptions of molten rock hot rock fragments and hot gases. Description of a volcano answers.
So what exactly is a volcano. Put simply a volcano is an opening in the earth s surface. A vent in the crust of the earth or another planet or a moon from which usually molten or hot rock and steam issue also.
Volcanoes are formed by the movement of tectonic plates. A hill or mountain composed wholly or in part of the ejected material. They produce magma ashand lava.
Lava can be broadly classified into four different compositions. Felsic lavas dacites or. Yet while eruptions are spectacular to watch they can cause disastrous loss of life and property especially in densely populated regions of the world.
Something of explosively violent potential. A volcanic eruption is an awesome display of the earth s power. Well it can be defined as a vent in the earth s crust through which lava.
Volcanoes are just like very hot hottub. Usually found in a mountain the opening allows gas hot magma and ash to escape from beneath the earth s crust. Lava can reach 2000f.
A mountain with a large circular hole at the top through which lava hot liquid rock gases. Origin of the. The earth s crust is broken into 17 major rigid tectonic plates.