Geography
Give reasons for the following:
Deposition is the main work of river in the lower course.
Weathering
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Answer
As the river approaches the sea or ocean, its gradient decreases, resulting in a reduction of the river's velocity. It's volume also increases due to addition of tributaries along the way. Due to this, it cannot carry the sand particles any more and deposits all the sediments at its mouth. Hence, deposition is the main work of river in the lower course.
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Related Questions
Give reasons for the following:
Erosion is the main work of river in the upper course.
Give reasons for the following:
Weathering is a static phenomenon.
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Chemical weathering may affect the farming activities.
Which of following work is active in the lower course of a river?
- Erosion
- Deposition
- Both erosion & deposition
- Transportation