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The diagrams A, B and C show a river in its upper, middle and lower courses - Junior Cycle Geography - Question 3 - 2005
Question 3
The diagrams A, B and C show a river in its upper, middle and lower courses. Circle the correct answer in each of the statements below: (i) Sideward erosion is mos... show full transcript
Worked Solution & Example Answer:The diagrams A, B and C show a river in its upper, middle and lower courses - Junior Cycle Geography - Question 3 - 2005
Step 1
(i) Sideward erosion is most common in
Answer
Sideward erosion generally occurs in the middle course of a river where the flow is wider and less powerful than in the upper course. In this case, the correct answer is Diagram B, as it illustrates a more mature river with wider banks, indicating greater sideward erosion.
Step 2
(ii) Deposition is most common in
Answer
Deposition occurs primarily in the lower course of the river where the energy of the water decreases, allowing sediments to settle. Therefore, the correct answer is Diagram C, as this depicts a river nearing its mouth where deposition is most prevalent.
Step 3
(iii) Downward erosion is most common in
Answer
Downward erosion is typically found in the upper course of a river where the current is faster and more powerful, carving down into the riverbed. Hence, the correct answer is Diagram A, which represents the upper course of the river showing significant downward erosion.