Volcanoes
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| Volcano | Occur because its crust is broken into 17 major, rigid tectonic plates that float on a hotter, softer layer in its mantle.
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| Lava | Hot molten.
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| Magma | Hot fluid.
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| Volcanic ash | eruptions and measuring less than 2 mm.
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| Magma Chamber | Is a large underground pool of liquid rock found beneath the surface of the Earth.
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| Crater | Is a large, bowl-shaped cavity in the ground or on the surface of a planet.
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| Vent | Is an opening that allows air, gas, or liquid to pass out
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| Pipe | Is narrow tube made from wood, clay, etc.
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| Lava Flow | Is a mass of flowing lava.
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| Ring of Fire | Is an area in the basin of the Pacific Ocean.
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| Element | a substances that can not be broken down into other substances.
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| Viscosity | a magma that depends upon it silica content and temperature.
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| Silica | the compand is made up of particles of the elements oxygen and silicon.
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| Pahoehoe | Fast moving hot lava that has low viscsity.
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| AA | Lava that is cooler and slow moving.
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| Compand | A substance made of two or more elements that have been chemically combined.
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| Subduction | The process by which oceanic crust sinks beneath a deep ocean trench and back into the mantle at a convergent plate boundary.
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| Extinct | A volcano that is unlikely to erupt again.
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| Dormant | Volcano that can be active now but may become active in the future.
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| Active | A volcano is one that is erupting or has shown signs that it may erupt near the future.
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| Cider cone | Cone-shaped mountain formed from ash,ciders, and bombs.
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| Dike | Forms when magma squeezes between layers of rock and hardens.
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| Sill | Forms when magma squeezes between layers of rock and hardens.
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| Hot spring | Collect in a natural poo
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| Geyser | Is a foundation of water and steam that erupts from the ground.
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| Caldera | A huge hole left by the collapse of a volcanic mountain.B
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| Batholith | Mass of rock formed when magma cooled inside the crust.
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| Lava Plateau | High,level area formed by repeated lava flows.
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| Composite Volcano | Mountain formed by lava flows alternating with explosive eruptions.
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| Shield Volcano | Gently sloping mountain formed by repeated lava flows.
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