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What type of erosion is dominant in the upper course of a river?
Wiki User
∙ 14y ago
Hydraulic action takes place in the upper course of a river. This process of erosion is to do with the force of the water against the beds and banks. There is also Abrasion/corrosion which is where the beds and banks are worn down by the river loads. It will throw tiny particles and stones sometimes at high velocity also causing the river to erode.
Wiki User
∙ 14y ago
Wiki User
∙ 11y agobacon
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What is a river process?
what is a river process ? A river process consists of three 1.erosion (in the upper course) 2.transportation(in the middle course) and 3.deposition (in the lower course).
What can the upper course of a river be used for?
The upper course of a river is where the the river starts. Or also known as the beginning of the river.
Why does a river valley become flat in the lower course?
The river valley becomes flat in its lower course due to the levels of erosion occurring in the river itself. In the upper course, the river's energy is used for vertical erosion(downward erosion) in order to get to sea level. That's why you see steep V-shaped valleys or Gorges being formed. However, in the lower course when the river is at sea level, a lot of this erosion becomes lateral(horizontal) which is why you see rivers becoming a lot wider in the lower course. Therefore, because the river is no longer eroding downwards there's no longer a difference in height between it and its valley, so the river valley becomes flat.
What are five land formed by river erosion?
The processes of erosion and deposition create different river landforms. River landscapes change as you go downstream from the source to the mouth. In the upper course of a river, steep gradients lead to rapid-flowing rivers. In the middlecourse, the river meanders through gentle gradients.
What are five land forms formed by river erosion?
The processes of erosion and deposition create different river landforms. River landscapes change as you go downstream from the source to the mouth. In the upper course of a river, steep gradients lead to rapid-flowing rivers. In the middlecourse, the river meanders through gentle gradients.
In which course of the river are potholes formed?
Typically it is the upper course of the river
Name for a river in its upper course?
young river
Why does the occupied channel width increase as you get further downstream?
This happens because in the lower course of the river, where the channel is much closer to base level, there is much more lateral erosion taking place and a lot less vertical. In the upper course, more vertical erosion takes place because the river is cutting down in an attempt to reach base level. As the river is reaching its mouth in the lower course, less vertical erosion is needed. Also because the river has a greater velocity downstream, due to more water entering the river from tributaries, there is more kinetic energy for lateral erosion to take place. This leads to more erosion in the form of abrasion, hydraulic action and cavitation which will widen the river channel.
Stages of a river?
middle course, upper course, lower course...
What landforms do the upper course of the river have?
V-shaped valleys The river channel - vertical erosion, shallow but a very fast flow Waterfalls Gorges(which are formed by waterfalls) Bedload is also very big and angular.
Where is the waterfalls found in the course of the river?
near the upper course
Where are pebbles in a river upper middle or lower course of a river?
the pebbles will be in the lower course of a riverthe pebbles will be in the lower course of a river
