Geography ch 4 - Exogenetic Movements Part 2 — Social Studies STD 9 — Question
Maharashtra BoardEnglish MediumSTD 9Social StudiesGeography ch 4 - Exogenetic Movements Part 22 Marks
Question
Transportation and deposition by rivers
✓
Answer
A river flows down the slope from a hilly region.
At the foothills, the change in the slope causes deposition of coarse sediments.
As these are deposited in a triangular shape, they form an alluvial fan. As the steepness of the slope decreases and the transport capacity of the river reduces, it starts flowing slowly.
It bends (meanders) often in its way in an effort to cross even small obstacles.
By the time the river reaches the sea, its riverbed becomes very wide and its speed becomes very slow.
The sediments of the river get deposited in its bed and on its banks. The factors that determine the deposition of sediments are thelength of the rivers, volume of water, amountof sediments, and the slope of the river and the earth’s surface.
Thus, landforms like flood levees, flood plains,deltas are formed because of deposition of sediments.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.