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chapter 18 es/

vocab

QuestionAnswer
describes all the processes associated with the discharge of magma, hot fluids, and gases volcanism
unusually hot regions of Earth's mantle where high-temperature plumes of magma rise to the surface hot spots
forms when lava flows out of long cracks in Earth's crust flood basalts
cracks from flood basalts fissures
lava reaches the surface by traveling through a tubelike structure conduit
where lava emerges vent
bowl-shaped depression crater
larger depressions calderas
mountain with broad, gently sloping sides and a nearly circular base shield volcano
forms from eruptions ejected small pieces of magma cinder cones
formed of layers of hardened chunks of lava from violent eruptions alternating with layers of lava that oozed downslope before solidifying composite volcanoes
physical property that describes a materials resistance to flow viscosity
erupted materials tephra
rapid moving clouds of tephra mixed with hot, suffocating gases pyroclastic flows
Created by: shanecrawford
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