Earth Science
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| Volcano | a mountain, that has a crater through which lava, rock fragments, that has been erupted from the earths .
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| Lava | hot molten rock.
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| Magma | hot fluid.
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| Crater | a large, bowl-shaped cavity in the ground.
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| Vent | an opening at the earths surface.
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| Pipe | a vertical conduit below a volcano though which magma passes.
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| Lavaflow | a mass of flowing lava.
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| Ring of fire | an area in the basin of the Pacific Ocean where a large number of earthquakes and volcanoes eruption occur.
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| Element | a substance consisting of atoms which all have the same number of protons.
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| Viscosity | a measurement in fluid to deformation under shear stress.
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| Silica | a hard colorless compound that occurs as the mineral quartz.
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| Pahoehoe | basaltic lava forming smooth undulating.
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| AA | a variety of flow lava which rough surface of broken blocks.
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| Compound | a substance formed when two or more chemical bonds common in compounds.
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| Subduction | a process that take place at convergent boundaries by which one tectonic plate.
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| extinct | A volcano that is no longer active and is unlikely to erupt again.
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| dormant | A volcano that is not currently active, but that may become active in the future.
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| active | A volcano that is ready to erupt at anytime.
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| cinder cone volcano | A steep, cone-shaped hill or small mountain made of volcanic ash,cinders, and bombs piled up around a volcano's opening.
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| shield volcano | A wide, gently sloping mountain made of layers of lava and formed by quiet eruption.
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| composite volcano | A tall, cone-shaped mountain in which layers of lava alternate with layers of ash and other volcanic materials.
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| caldera | The largest hole at the top of a volcano formed when the roof of a volcano's magma chamber collapses.
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| batholith | A mass of rock formed when a large body of magma cools inside the crust.
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| Lava Plateau |
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| sill | A slab of volcanic rock formed when magma squeezes between layers of rock.
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| dike | A slab of volcanic rock formed when magma forces itself across rock layers.
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| hot spring | An area where magma from deep within the mantle melts through the crust above it.
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| geyser | A fountain of water and stream that builds up pressure underground and erupts at regular intervals.
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