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10 Cards in this Set
- Front
- Back
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Composition, Temperature, and Dissolved gases control the viscosity of a ___________ |
What is magma? |
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a measure of a material’s resistance to flow |
what is Viscosity |
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What are Factors affecting viscosity
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Temperature and Silica content |
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Gases expand within a magma as it nears the Earth’s surface due to ________________ |
decreasing pressure |
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The violence of an ___________ is related to how easily gases escape |
eruption |
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Dissolved gases are Mainly two gases |
H2O and CO2 |
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Volcanic feature Summit depression less than 1 kilometer in diameter |
What is crater |
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Volcanic feature Summit depression caused by a collapsed magma chamber |
What is Caldera |
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volcanic feature Surface opening connected to the magma chamber |
What is vent |
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volcanic feature Emit only gases and smoke |
what is fumarole |
