Upper Course Features Flashcards
Define the Bradshaw Model.
It is a geographical model which describes how a river’s characteristics vary between the upper and lower course of a river.
State the characteristics that INCREASE throughout the river.
Cross sectional area, Velocity, Discharge, Wetted perimeter, Depth, and Width.
State the characteristics that DECREASE throughout a river.
Stone size, Gradient/Slope, Friction/Turbulence, and Stone angularity.
Cross sectional area meaning.
The view of the river from within it.
Velocity meaning.
Speed of the water.
Stone size meaning.
How big the stones are.
Discharge meaning.
Amount of water in a river.
Gradient/slope meaning.
How steep the slope is.
Wetted perimeter meaning.
How wet the land around the river is.
Friction/turbulence meaning.
Violence of water.
Depth meaning.
How deep the water is.
Stone angularity meaning.
How pointy the rocks are.
Width meaning.
How wide the river is.
How is a V-shaped valley formed?
Vertical erosion causes a v-shaped valley to have a ‘v’ shape.
