Volcanic Eruptions Flashcards
a vent or fissure in the the Earth’s surface through which magma and gases are expelled.
Volcano
the body of molten rock that feeds a volcano
magma chamber
an opening at the surface of the Earth through which volcanic material passes
vent
a funnel-shaped pit near the top of the central vent of a volcano.
crater
a large, semicircular depression that forms when the magma chamber below a volcano partially empties and causes the ground below to sink.
caldera
a wide, flat land form that results from repeated nonexplosive eruptions of lava that spread over a large area.
lava plateau
an area of deep cracks that forms between two tectonic plates that are pulling away from each other.
rift zone
a volcanically active area of Earth’s surface far from a tectonic plate boundary.
hot spot
