Question

Describe the work of river - Class 7 Geography

Answer 1

Answer:

The Work of Rivers. The erosional work of streams/rivers carves and shapes the landscape through which they flow. Load carried by a river will grind against its bed and sides. This process slowly wears the bed and sides away.

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Answer 2

Answer:

A river has 3 basic functions: erosion, transportation and deposition. It's the mixture of those 3 processes that result in the formation of assorted landforms by the action of a watercourse.

              The erosional work of streams/rivers carves and shapes the landscape through that they flow. Load carried by a watercourse can grind against its bed and sides. This method slowly wears the bed and sides away. once thrown against the perimeters and bed of rivers, the load gets broken into smaller items.

• The running water of the watercourse erodes the layer leading to the formation of various landforms with the assistance of many different factors.
• once the watercourse falls at a steep angle over terribly onerous rocks or down a deep vale facet it ends up in the formation of a water.
• Whereas the watercourse enters the plain it twists and turns forming massive bends that are known as meanders.

• In due course of your time the meander loop cuts far from the most watercourse and forms a cut-off lake, that is additionally referred to as Associate in Nursing ox-bow lake.
• Sometimes, the watercourse overflows the banks inflicting get the neighboring areas. Because it floods, it conjointly deposits the layers of fine soil and different material referred to as sediments on its banks.
• This ends up in the formation of a fertile field. The raised banks on both sides of the watercourse ar referred to as levees.

• When the watercourse approaches a ocean, the speed of the flowing water decreases, and so the watercourse starts to interrupt up into many streams known as distributaries.
• Then there  comes a time once the watercourse becomes terribly slow and it starts to deposit its load. Every branch forms its own mouth and so the sediments collected from all the mouths forms a delta, which can be a triangular landmass.

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