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VOLCANOES - Coggle Diagram
VOLCANOES
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VOLCANO TYPES
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extinct volcano: It has not erupted in the last 1,000 years
VOLCANO TYPES 2
shield volcanoes: Shield volcanoes are almost always the result of fluid lava flows.
Because highly fluid lava erupts from these volcanoes, the lava travels further.
cinder cone volcanoes: A steep conical hill made of various loose fragments that were blown violently into the air.
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composite volcanoes: They are made of alternating layers of various material.
They can rise to heights of more than 2,400
metres above their bases.
TYPES OF ERUPTION
explosive:
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Eventually, the pressure reaches a point where the magma erupts explosively out of the volcano.
effusive:
Effusive eruptions occur when hot (1200oC), runny basalt magma reaches the surface.
the magma erupts, forming lava that flows downhill.
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