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9 terms

Science, Mountains and Volcanos

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volcano
a fissure in the earth's crust (or in the surface of some other planet) through which molten lava and gases erupt
Magma Chamber
the body of molten rock that feeds a volcano
Vent
an opening the surface of the earth through which volcanic material passes.
Crater
a bowl-shaped depression formed by the impact of a meteorite or bomb
Caldera
the large hole at the top of a volcano formed when the roof of a volcano's magma chamber collapses
lava plateau
a wide, flat landform that results from repeated nonexplosive eruptions of lava that spread over a large area
rift zone
an area of deep cracks that forms between two tectonic plates that are pulling away from each other
magma
molten rock in the earth's crust
hotspot
A weak spot in the middle of a tectonic plate where magma surfaces; forms a volcano