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21 Cards in this Set
- Front
- Back
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Volcano
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A mountain formed of lava, tephra, or both.
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Magma
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Molten rock that may contain dissolved gases as well as some solid minerals.
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Viscosity
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Measure of the resistance of a fluid to flow
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Basaltic Magma
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Mobile rock minerals with a composition similar to that of basalt.
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Andesitic Magma
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A magma with intermediate silica content.
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Rhyolitic Magma
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Molten rock with a silica content greater than 68%.
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Volcano Explosivity Index
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A system describing the relative size of volcanic eruptions.
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Tephra
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Rock fragments produced by volcanic explosions.
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Tephra
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Rock fragments produced by volcanic explosions.
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Isostasy
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The principle that the upper parts of Earth's outer layers are in a state of flotational equilibrium.
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Tephra
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Rock fragments produced by volcanic explosions.
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Isostasy
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The principle that the upper parts of Earth's outer layers are in a state of flotational equilibrium.
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Lahar
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Indonesian term describing the rapid flow of water and loose debris down steep volcanic slopes, a volcanic mudflow.
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Tephra
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Rock fragments produced by volcanic explosions.
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Isostasy
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The principle that the upper parts of Earth's outer layers are in a state of flotational equilibrium.
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Lahar
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Indonesian term describing the rapid flow of water and loose debris down steep volcanic slopes, a volcanic mudflow.
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Acid Rain
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Rain with a pH value less than the pH of unpolluted precipitation.
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Tephra
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Rock fragments produced by volcanic explosions.
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Isostasy
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The principle that the upper parts of Earth's outer layers are in a state of flotational equilibrium.
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Lahar
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Indonesian term describing the rapid flow of water and loose debris down steep volcanic slopes, a volcanic mudflow.
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Lava
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Magma that reaches the ground surface.
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