volcanoes eruption
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each of the black spaces below before clicking
on it to display the answer.
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| Magma | A molten mixture of rock-forming substances,gases, and water from the mantle
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| Lava | Magma that reaches the surface
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| Viscosity | The resistance of a liquid to flow
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| Silica | A compound made up of particles of the elements oxygen and silicon
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| Pahoehoe | Is fast-moving, hot
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| Aa | Lava that is cooler and slower-moving
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| Volcanic ash | Fine rocky particles as small as a speek of dust
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| Crater | A bowl-area around a volcanoes central vent
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| Vent | Magma leaves the volcano through this opening
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| Cinders | Pebbled size particles
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| Bombs | Particles ranging from the size of a baseball to the size of a car
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| Volcano | A weak spot in the crust where molten material, or magma comes to the surface
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| Pyroclastic Flow | When an explosive eruption hurls out a mixture of hot gases,ash,cinders, and bombs
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| Hot Springs | When undergroundwater heated by a nearby body of magma rises to the surface and collects in a natural pool
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| Element | A substance that cannot be broken down into other subtances
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| Cinder Cone Volcano | When these materials pile up around the vent, forming a steep, cone-shaped hill or mountain
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| Composite Volcano | When alterning layers form a tall, cone-shaped mountain
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| Shield Volcano | When layers gradually build a wide, gently sloping mountain
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| Dike | It forms when magma forces itself across rock layers and hardens
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| Batholith | When a large body of magma cools inside the crust
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| Sill | It forms when magma squeezes between layers of rock and hardens
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| Pipe | This is what magma moves through
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| Magma Chamber | When magma collects in a pocket
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| Dormant | When a volcano is not active now but may become active in the future
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| Active | A volcano that is currently or recently has rumbled or show signs of life
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| Extinct | Volcano is unlikely to erupt again
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| Geyser | A fountain of water and steam that erupts from the ground
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| Caldera | A huge hole left by collapse of a volcanic mountain
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| Lava plateau | A high, level area formed by repeated lava flows
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| Ring of Fire | Formed by the many volcanoes that rim the Pacific Ocean
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