User talk:Studies nerd

THE MIDDLE COURSE : The river leaves the hill and enters a plain that’s when the second part starts. Middle course, the slope is less therefore the speed of the current of the river is less. River is ed by many tributaries and its volume increases. As the volume of water increases the banks are eroded and the river becomes wide. The river can hardly erode or transport now it keeps depositing sediments or silt along the way. As the channel gets blocked the river changes its course very often and becomes winding. Such a eroding channel is known as a meander

Concave - hollowed out or rounded inwards

Convex - curved or rounded outwards

The water flowing through the meander usually strikes and erodes the concave side. Erodes through the concave side and deposits on the convex side.

This leads to the gap out of the mouth of a meander decreasing. The river finally finds a straight course leaving the meander behind. This abandoned meander is called a oxbow lake.

Flood plain ( still part of THE MIDDLE COURSE) At the line of floods the silt carried by the river is deposited in this area, year after year forming a plain this plain is known as a flood plain.

Alluvial

At the foot of the mountain the sediment carried by the river is the upper course, start collecting and take the shape of a fen. Over a period of time many fens joined together to make a plain.


 * volume - the amount of space that a substance or object occupies, or that is enclosed within a container.


 * banks- the land alongside or sloping down to a river or lake


 * depositing- Deposition is the processes where material being transported by a river is deposited. Deposition occurs when a river loses energy. This can be when a river enters a shallow area (this could be when it floods and comes into contact with the flood plain) or towards its mouth where it meets another body of water.


 * sediments- matter that settles to the bottom of a liquid; dregs.


 * silt - fine sand, clay, or other material carried by running water and deposited as a sediment, especially in a channel or harbour.


 * channel - a length of water wider than a strait, joining two larger areas of water, especially two seas.


 * meander - (of a river or road) follow a winding course.

THE LOWER COURSE :. The lower course the last part of a river near its mouth its called the lower course. The current of the river is really slow. Deposition is the main activity of the river. Silt and other materials are continuously deposited. The river channel are blocked very often and then new branch or new channels are formed.These branch channels are known as distributaries. Over a period of time the silt which is deposited forms a triangular island, collect delta.

When the tidal waves and sea erodes constantly wash the mouth a delta cannot be formed. Such a free mouth of a river is called a estuary.


 * mouth - the place where a river enters the sea.


 * distributes - a branch of a river that does not return to the main stream after leaving it (as in a delta).

--Studies nerd (talk) 12:48, 22 January 2020 (UTC) studies nerd
 * estuary -  a branch of a river that does not return to the main stream after leaving it (as in a delta).