12 Questions
How is discharge calculated?
By multiplying the cross-sectional area of the stream by its average velocity
What happens to the velocity if the cross-sectional area of a stream increases?
Velocity decreases
What are floodplains?
Flat areas adjacent to river channels that are occasionally flooded
How are oxbow lakes formed?
When a meander loop is cut off from the main channel
What is a drainage basin?
The entire land area that contributes water to a specific stream or river system
What does recurrence interval refer to in relation to floods?
The average time between floods of a certain magnitude
What is one factor contributing to the formation of deep, V-shaped valleys in mountain streams?
Limited vegetation exposing rock to erosive force
What does the angle of repose refer to in relation to loose material on a slope?
The steepest angle without material collapsing
What happens to the gradient (slope) of a stream as it flows downstream?
It decreases, resulting in a slower flow rate
How does the channel width change as a stream flows downstream?
It increases as downcutting decreases and flow rate slows
What is lateral erosion in the context of stream dynamics?
Erosion that widens the valley by removing material from its sides
How does limited vegetation at high altitudes impact stream dynamics?
It minimizes soil stabilization and exposes rock to erosive forces
Learn about the factors that contribute to the formation of V-shaped valleys by mountain streams, including steep gradient, downcutting, limited vegetation, and weathering. Understand how these processes shape the landscape in mountainous regions.
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