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volcanoes

TermDefinition
volcano a weak spot in the earths crust where molten material or magma comes out of the surface
lava when magma reaches the surface it is called lava
magma a molten mixture of rock forming substances, gases. and water from the mantle is called magma
ring of fire formed by many volcanoes that seround the pacific ocean
hot spot an area where material from deep within the mantle rises and then melts forming magma
shield volcano gently sloping mountain formed by repeated lava flows
composite volcano mountain formed by lava flows alternating with explosive erruptions
sill when magma squeezes between rock layers and hardens
dike when magma forces itself across rock layers and hardens
batholith when a large body of magma cools inside the surface
lava plateau high level area formed by repeated lava flows
extinct not errupting anymore, extinct
dormat resting and inactive, not erupting
cinder cone volcano gently sloping volcano formed by repeated lava flow
element a substance that can not be broken down
viscosity physical property of liquids
silica major ingrediant in magma
pahoehoe fast moving hot lava with low viscosity
aa lava that is cooler and slower
compound a substance made of two or more elements that have been chemically combined
volcanic ash fine rock particles as small as a speck of dust
magma chamber inside a volcano magma collect in a
crater a bowl shaped area around a volcanoes central vent
vent the magma leaves the volcano
pipe on the way to the top of the volcano magma goes through this
caldera large whole in a volcano formed when a volcanoes magma chamber empties
hot spring a pool of hot steaming water
geyser a fountain of water and steam that errupts from the ground
Created by: 1964826988
 

 



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