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As the river flows around the outside of the bend, it accelerates just like when a car goes around a bend. The water, like a car, is pulled toward the outside of the bend through centripetal force (which is why road bends are often banked). The same thing happens to the water surface. It actually rises around the outside of the bend. This higher elevation of the water surface means that the water on the outside of the bend is slightly deeper than the inside. Since water always tries to seek a level surface, the water on the outside of the bend actually flows downward, along the bottom and comes back up on the inside of the bend. This secondary current pushes material from the outside of the bend back up on the inside of the bend - and that's where sand bars come from.
So the combination of accelerated flow around the outside combined with the secondary current moving downward erodes the outside of the river bend.
What else can I help you with?
What is a deep undercut area on the outside of a river bend called?
As far as I recall from my geography this is an 'Oxbow' bend, so-called because of the shape of the animals horns. Whether or not there is a term for the resulting cliff caused by the underctting action of the water I don't know.
What kind of river will be found in steep mountain areas?
depends on what kind of mount. it is or the area
A steep undercut area on the outside of a river bend?
As the river flows around the outside of the bend, it accelerates just like when a car goes around a bend. The water, like a car, is pulled toward the outside of the bend through centripetal force (which is why road bends are often banked). The same thing happens to the water surface. It actually rises around the outside of the bend. This higher elevation of the water surface means that the water on the outside of the bend is slightly deeper than the inside. Since water always tries to seek a level surface, the water on the outside of the bend actually flows downward, along the bottom and comes back up on the inside of the bend. This secondary current pushes material from the outside of the bend back up on the inside of the bend - and that's where sand bars come from. So the combination of accelerated flow around the outside combined with the secondary current moving downward erodes the outside of the river bend.
Does gradient of a stream increase or decrease downstream?
Decrease. The source of the river is usually in a mountainous area with a steep gradient.
Less steep blue area or orange area on a map?
Blue area are less steep
What is the difference of a mesa and a canyon?
A canyon is a ravine formed by a river in an area with little rainfall. A mesa is a flat tableland with steep edges.
When a river goes from a steep slope to a flat area does the sediment get smaller?
Yes. The big stuff requires more energy to move.
A high uplifted area with steep slopes?
A mountain is a high, uplifted area with steep slopes. Mountains are large elevated area that rises from level ground. They are large and steep hills.
What is the dirference of a valley and a canyon?
A valley is a large low-lying area. A canyon is a steep-sided formation, typically carved by a river that runs through it.
Which is the saltiest river in the world?
The Anndroscoggin River in Auburn-Lewiston, Maine, USA. The river smells so bad in the morning that the area rarely goes outside. Daniel
Why when a river flows out of a steep an alluvial fan forms?
An alluvial fan forms when a river flows out of a steep gradient and enters a flatter area, causing a reduction in its velocity. This decrease in speed leads to the deposition of sediment that the river was carrying, as it can no longer support the same load. Over time, these sediments accumulate in a fan-shaped pattern, creating the characteristic structure of an alluvial fan. This process is driven by the river's transition from erosion to deposition as it interacts with the surrounding landscape.
What is a High uplifted area with steep slopes?
its a plateau
