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Name one feature formed by rivers and with the aid of a labelled diagram, explain how it was formed. - Junior Cycle Geography - Question 4D - 2010
Question 4D
Name one feature formed by rivers and with the aid of a labelled diagram, explain how it was formed.
Worked Solution & Example Answer:Name one feature formed by rivers and with the aid of a labelled diagram, explain how it was formed. - Junior Cycle Geography - Question 4D - 2010
Step 1
Feature: Meander
Answer
A meander is a natural loop formed in the course of a river. It is characterized by its sweeping curves.
Explanation of Formation
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Erosion on Outer Bank: On the outer curve of a river, the flow rate is higher, leading to increased erosion as the water scours the bank. This results in the outer bank becoming steeper.
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Deposition on Inner Bank: Conversely, on the inner curve where the flow rate is slower, sediment is deposited. This creates a gentle slope and contributes to the formation of sandbars or point bars along the inner bank.
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Feedback Loop: Over time, the continued erosion on the outer bank and deposition on the inner bank causes the meander to become more pronounced, creating significant bends in the river's path.
Diagram
A labelled diagram should illustrate a river with clear indicators showing areas of erosion on the outer bank and deposition on the inner bank.
Step 2
Step 3