Define True or False
100
What is the definition of a stream?
A body of water flowing in a channel or watercourse, as a river, rivulet, or brook.
100
T/F Sediment yield affects streams.
True
100
What are the common causes of floods and factors that influence them?
The degree in a location is primarily related to the magnitude, timing, & type of precipitation, human modifications of physical landscape. Ground absorbing water, evaporation rates, and physical characteristics.
100
A depositional feature common near rivers?
The broad , flat lands also known as flood plains.
200
What is the definition of upstream?
Toward or in the higher part of a stream; against the current.
200
T/F Channel roughness slows down water moving through a stream.
True
200
What is a flood?
A temporary overflow of a river onto adjacent lands not normally covered by water.
200
What is a deposit that causes the main channel to split into several smaller channels?
Braided Stream.
300
What is the definition of downstream?
With or in the direction of the current of a stream.
300
T/F Laminar flow is slowed down water movement.
False, movement of water in a series of sheets.
300
When do they occur?
Amount of water on the land surface exceeds the volume of water that can be transported in stream channels. They can occur almost anywhere, any time.
300
Floodplains have been considered for?
Prime sites for urban and agricultural development because of flat lands, fertile soils, and ready access to water.
400
What is the definition of erosion?
The process by which the surface of the earth is worn away by the action of water, glaciers, winds, waves, etc.
400
T/F Turbulent flow allows lifting and support of fine particles.
True
400
How is a delta formed?
Rivers dump much of their sediment to form a delta where they enter the relatively quiet waters of an ocean or lake.
400
Erosion produces?
Bed load, suspended load, and dissolved load that can be collectively referred to as the stream load.
500
What is the definition of substrate?
An underlying substance or layer.
500
T/F Channel shape is the efficiency of a streams shape measured by its hydraulic radius
True
500
What is the process of lateral migration?
Stream can migrate across a valley floor in the direction of the erosion.
500
What influences the stream load?
Geology and land use of drainage basin.






FACTORS AFFECTING STREAMS

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