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What are volcanoes?
Volcanoes are a form of natural disaster
Name some recent volcanic eruptions
Mt. Taal- Phillipines
Calbuco- Chile
Hawaii- 2018
T/F: Volcanoes must be explosive to create problems
False

Volcanoes
an erupting vent through which molten rock surfaces; a mountain built from magmatic eruptions

What characteristic features make up volcanoes?
A magma chamber
Fissures and vents
Craters
Calderas
Distinctive profile

Magma chamber
Must be present for volcanoes to form. usually an open cavity or area of highly fractured rock

Vents
a lava outlet on a volcano; they can form anywhere on the volcano
Summit vent
at the top of a volcano
Flank vent
on the side of a volcano
Craters
a bowl shaped depression on a volcano that forms on any of the vents

How are craters formed?
They form as erupted lava cools around the vent
Caldera
a gigantic volcanic depression; much larger than a crater, though similar

How do calderas form?
The magma chamber empties, and is done erupting. A volcano collapses into it, and is usually very explosive