Vocabulary#14 Volcanoes

Hot spot:A very hot part of the mantle, where magma can melt through a plate moving above it.
S:As a plate moves over the hot spot,magma melts up through the crust and form volcanoes.

Vent:A central opening in a volcanic area through which magma may escape.
S:The magma escape from th vent in a volcanoe.

Lava:Magma that reaches Earth`s surface and flows out of a vent.
S:The Lava is like a magma that flows out the vent.

Crater:A cuplike hollow that forms at the top of a volcano around the vent.
S:When a volcano collapses it form a crater.

Cinder-cone volcano:A steep-sided cone that forms from explosive eruptions of hot rocks,ranging from particles to boulders.
S:Italy`s Stromboli is a cinder-cone volcano.

Shield volcano:A wide ,gently sloped cone that forms from flows of lava.
S:Hawaii`s Mauna Loa is a shield volcano.

Composite volcano:A cone formed from explosive eruptions of hot rocks followed by a flow of lava,over and over.
S:Shishaldin is a composite volcano.

Geothermal energy:Heat from below Earth`s surface.
S:Today scientist are finding ways to use geothermal energy.