Question

In which course of a river, meanders are formed?

Answer 1

Hint: A river is a ribbon-shaped stream of water that flows downhill due to gravity's influence. A river might be vast and deep, or it can be shallow enough to wade across. A stream, creek, or brook is a flowing body of water that is smaller than a river. Some rivers run all year, while others flow just during certain seasons or after particularly heavy rain.

Complete answer:
The middle course of a river begins when it leaves the hilly area and enters the plain. On a plain, the riverbed has a lower slope. As a result, the present speed is slower than on the top course. The river is fed by a number of tributaries, which enhances the volume of water flowing through it.

Because the water moves at a sluggish pace, it cannot erode the bed or convey much material. However, as the volume of water increases, the banks disintegrate and the river widens.

The slope of the river bed decreases as you get closer to the bottom of the plain course. The current's speed slows down as well. At this point, it can't erode or transfer. This section collects the additional sediments transported by the river during floods. The river's channel is occasionally blocked, and the river's route varies frequently and becomes meandering. A meander is a twisting waterway like this.

Note: The lower Dhansiri River in Assam follows a significantly meandering path. Water flowing through a meander generally erodes the concave sides of the meander. Sediments, on the other hand, are deposited on the convex sides. As a result, the space near the mouth of a meander narrows. When the water is flowing fast during a flood, the gap may be filled.