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Science Explosion 02

BJU 6th Science - Chapter 1

QuestionAnswer
lithosphere The crust and upper area of the earth’s mantle
plate A large piece of the earth's crust that floats on the melted rock in the earth's mantle
theory of plate tectonics The idea that Earth's crust is made up of moving plates
plate boundary The place where plates meet
earthquake An event that occurs when rocks along the plate boundaries shift suddenly and release their stored energy
fault A break in the earth's surface along which rock can move
magma The molten rock and gases beneath the earth's surface
volcano A crack in the earth's crust through which molten rock comes to the surface
volcanologist A scientist who studies volcanoes
magma chamber Pockets of molten rock deep in the earth's lithosphere
lava Magma that has broken through the surface of the earth
vent The opening in the surface of the earth through which lava flows
crater The bowl shape at the top of a main vent through which lava flows
ash Bits of crushed rock propelled from an erupting volcano (particles smaller than 2 mm)
cone The funnel-shaped mound of a volcano
Ring of Fire A ring of volcanoes found in an area around the Pacific Ocean
hot spot A volcano that occurs where a pool of intensely hot magma rises toward the surface, melting rock until it breaks through the crust
cinder Bits of ash and lava
tephra A mixture of cinder, ash, and rock
pyroclastic flow An avalanche of red-hot dust and gases that races down the sides of some volcanoes
vog Volcanic fog or gases (deadly)
debris flow Mud and rock fragments that surge down a mountain when part of it collapses
igneous rock Rock formed as magma and lava harden
hot spring Water that rises to the earth's surface as it is heated by a magma pool
geyser A spring that periodically blows steam and hot water into the air
mud pot A hot spring that has more mud than water
Created by: MrsDunham
 

 



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