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Science Questians for test

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
Which type of volcanic eruptions associated with pyroclastic materials being released? Why?   Explosive Eruption  
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What is the difference between lava and magma?   Lava is above ground and magma is underground  
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What process causes hot, solid rock to come up through the mantle over hot spots?   Convection  
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What flows onto Earth's surface during a non-explosive volcanic eruption?   Lava  
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Which type of volcano is least likely to have a pyroclastic flow? Why?   Shield volcanoes  
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What type of volcano is composed mostly of pyroclastic material?   Cinder cones  
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Volcanic islands can sometimes form over hot spots. What land feature should be under a hot spot?   Mantle Plume  
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What type of volcano has the steepest sides? Why?   Cinder Cones  
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If a volcano's eruption alternates between quiet and violet eruptions, which type of volcano is it?   Composite volcanoes  
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When there are long cracks in earth's surface and magma can sometimes erupt from them, what are the cracks called?   Fissures  
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What volcanic feature forms a small depression around a volcano's vent?   Craters  
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