Erosion by river is more prominent in the mountains than in the plains. Why?
Answers
Answer:
Erosion by river is more prominent in the mountains than in plains.
Explanation:
Because the rivers flowing from mountains carry more amount of water and is high in speed they take water from rains as well as melting of snow or glaciers.
Answer:
Erosion by rivers is more prominent in the mountains than the plains because of the following reasons:
Due to ‘Stages of river’
The river is in the ‘young stage’ at the mountain, having more velocity due to the steeper slopes thus, providing impetus to its erosional power. Steep-sided V-shaped valleys, waterfalls, and rapids are characteristic features of this stage.
Whereas, it is in the ‘mature’ and ‘old/senile stage’ at the plains, having lesser velocity due to the gentler slope, which inhibits its erosional power, and boosts the depositional power (i.e power of depositing sediments which has been eroded by her at the younger stage). Meanders (& Ox-bow lakes), floodplains and deltas are the chief features of these two stages.
2. Area of Working (i.e area to be eroded)
The river is narrower at the mountains, making its area of working less, thus enabling her to erode material in an efficient & effective manner.
Whereas, at the plains, the river is wider, making her area of working vast and expansive, thus its erosional activity weaker.
Hope it helps