Changes in the characteristics of a river and its valley II Flashcards
What type of erosion is there in the upper course of a river
vertical erosion
What is the gradient in the upper course of a river
Steep gradient
What is the valley shape in the upper curse of a river
A v-shaped valley
How wide is the channel in the upper course of a river
Narrow
How deep is the channel in the upper course of a river
shallow
What is the velocity of the water in the upper course of a river
The water is slow flowing
What is the discharge like in the upper course of a river
There is a small discharge in the upper course of the river
What is the load in the upper course of a river like
The load in the upper course of the river is made up of large rocks
What type of erosion is there in the middle course of a river
lateral erosion
What is the gradient like in the middle course of a river
It is a medium gradient
What is the valley shape in the middle course of a river
A u-shaped valley
How wide is the channel in the middle course of a river
It is reasonably wide - wider than the upper course but narrower than the lower course
How deep is the river channel in the middle course
It is reasonably deep - deeper than the upper course but shallower than the lower course
What is the velocity like in the middle course of a river
It is quite fast
What is the discharge like in the middle course of a river
The discharge is quite high in the middle course of the river
What is the load in the middle course of a river like
small material e.g pebbles
What type of erosion is there in the lower course of a river
lateral erosion
What is the gradient like in the lower course of a river
In the lower course, the river has a very flat, gentle gradient
What is the valley shape in the lower couse of a river
A broad, flat bottomed valley
How wide is the channel in the lower course of a river
The channel is at its widest
How deep is it at the lower course of a river
The channel is at its deepest at the lower course
What is the velocity of the river in the lower course
The river has the highest velocity at the lower course
What is the discharge like in the lower course of a river
The discharge is at its highest in the lower course of a river
What is the load like in the middle course of a river
The load consists of fine light silt and suspend material in the lower course of a river
