River Systems 01/21/15 11-1b pgs. 272-274 IN: Which stage of the water cycle brings most of the...
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Transcript of River Systems 01/21/15 11-1b pgs. 272-274 IN: Which stage of the water cycle brings most of the...
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River Systems 01/21/1511-1b pgs. 272-274
IN: Which stage of the water cycle brings most of the water to Nevada?
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Terms to Learn and ObjectivesTerms to learn:
*erosion *tributary *drainage basin *divide*channel *load
Objectives:Identify the watershed of the Colorado River.Determine the location of the Continental
Divide.Explain factors the effect how a river causes
erosion on the land.
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What is this a picture of?Grand
Canyon
What carved the canyon?Colorado
River
What is this process called?Erosion
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Colorado River System
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What do rivers do?ErosionTransportationDeposition
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Erosion - the removal and transport of surface material, such as rock and soil.
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River Systems
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Tributaries – smaller streams or rivers that flow into larger ones.
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Drainage basin (also sometimes called a watershed) – the land drained by a river system.
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Cut and paste the diagram of the Colorado River Drainage Basin.
Color each of the five tributaries a different color.
Label each tributary.
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The Colorado River Watershed5 main tributaries:*Green *San Juan*Little Colorado*Virgin*Gila
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Divide - an area of higher ground than the basins it separates.
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All water on this side drains into the Pacific Ocean.
All water on this side drains into the Gulf of Mexico and the Atlantic Ocean.
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Find the Continental DividePut a dot at the end of each tributary that
leads from the east to the west.Connect the dots.
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The line should connect right about here
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Stream ErosionAll rivers start as streams.As more rock and soil are transported downstream, channels become wider and deeper.
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Channel – the path that a stream follows.
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What factors effect the rate of stream erosion?GradientDischarge Load
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Gradient – the steepness of a river or stream. (kind of like the slope)
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Discharge - the amount of water a stream or river carries in a given amount of time.
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Load - the materials carried in a stream’s water.
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OUT: How does the water cycle help develop river systems?