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Chapter 9 Volcanoes
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Caldera
A large, semicircular depression that forms when the chamber that supplies magma to a volcano partially empties and the chamber's roof collapses.
Hot Spot
Volcanically active places on the Earth's surface that are far from plate boundaries.
Magma Chamber
A body of molten rock deep underground that feeds a volcano.
Vent
It is the opening where magma rises from the magma chamber through cracks in the Earth's crust.
Volcano
Areas of Earth's surface through which magma and volcanic gases pass.
Mrs. Darwazeh
Trickum Middle School
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