(World Geography for objective general knowledge, current general knowledge, online general knowledge quiz questions, Indian general knowledge)
VOLCANOES
VOLCANOES
Volcano is an opening or vent through
which magma, molten rock, ash, and volatile erupt on to the Earth's surface.
It is conduit or pipe which rises from below the crust and vents to surface of
the Earth. Volcanoes tend to be conical in shape but can have a variety of
forms, depending on the nature of the erupted material (particularly its
viscosity), the character of recent eruptive activity, and the extent of
post-erupted modification by erosion. Most of the volcanoes are concentrated at
convergent and divergent plate boundaries but others, located in the interior
of plates, are associated with hot spots.
TYPES
OF VOLCANIC ERUPTION
