Download Earth Science--Ch 9 Volcanoes Review Guide

What to Know for the Ch. 9 (sec 1-3)Volcanoes Quiz—Earth Science 300
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What is a volcano?
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Where do volcanoes occur in general? Specifically where are volcanoes located?
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What is the asthenosphere? Why is most of the asthenosphere solid?
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What is the lithosphere?
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What is magma? What 3 factors allow/cause magma to form? Where do we find each of these conditions?
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What happens to magma once it forms? Why does it do that?
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What is a hot spot?/ Where does most hot spot volcanic activity occur? Do hot spots move? What are the
locations of some hot spots? What state was formed by a hot spot?
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What is viscosity? Describe a material that has low viscosity. Describe a material that has high viscosity.
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How is a magma’s silica content/composition related to its viscosity?
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How is the temperature of magma related to viscosity?
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How are basaltic (mafic) & rhyolitic (felsic) magmas different (in terms of viscosity & silica content)?
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How does silica content/magma composition affect the shape of a volcano?
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How does silica content/magma composition affect the type of eruption of a volcano?
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What is lava?
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What factors affect lava flows on land? Explain how…. What type of lava flows are formed?
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What factors affect lava flows in water? Explain how…. What type of lava flow is formed?
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What are pyroclastic materials? How are they classified?
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What is a pyroclastic flow?
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What determines the shape & structure of a volcano?
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Name the 3 types of volcanoes. Compare & contrast the 3 types of volcanoes. (Think about what they look
like/shape, how they erupt, what types of materials they are primarily made of, where they tend to form.)
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What is a caldera? How do they form? What is formed if they fill with water?
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What is a lava plateau? How do they form?