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8 Cards in this Set
- Front
- Back
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shield volcano |
mafic lava (extrusive)- basalt/rhyolite gentle (effusive) eruptions (low viscosity lava) low slopes mauna loa, hawaii |
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composite volcano |
felsic lava explosive eruption high viscosity lava clogs vents pressure builds up to a sudden explosion layers of ash and lava create sleep sides mount saint helens <-- can't predict explosion |
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drainage basin\ watershed
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A drainage basin is a portion of the Earth's surface that contains a main stream and its tributaries and is bounded by a drainage divide
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drainage divide
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represents the boundary between adjacent drainage basins and determines into which basin precipitation flows. There is no upper or lower limit to the size of a drainage basin.
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tributary
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small streams that enter into large streams
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dendritic drainage
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most common form and looks like the branching pattern of tree roots. It develops in regions underlain by homogeneous material
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trellis
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look similar to their namesake, the common garden trellis. Trellis drainage develops in folded topography like that found in the Appalachian Mountains of North America
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radial
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develops around a central elevated point. This pattern is common to such conically shaped features as volcanoes.
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