Gce Model Questions Vol1 2020 Geography Question 17

Practice objective / multiple choice question 17 from the 2020 Gce Model Questions Vol1 Geography examination.

Gce Model Questions Vol1 2020 Geography Objective / Multiple Choice Medium Difficulty
Question 17 GCE_MODEL_QUESTIONS_VOL1 • 2020 • GEOGRAPHY • objective

River section A drops \(150\) m in elevation over a horizontal distance of \(30\) km, while river section B drops \(80\) m over \(20\) km. The critical gradient for vertical erosion in this region is \(4\) m km\(^{-1}\). (i) Calculate the average gradient of each section (expressed in m km\(^{-1}\)). (ii) State which section is more likely to experience vertical erosion and justify your answer.

Answer Options

Correct Answer A. Section A gradient = 5 m km⁻¹; Section B gradient = 4 m km⁻¹; Section A is more likely to experience vertical erosion.
B. Section A gradient = 3 m km⁻¹; Section B gradient = 2 m km⁻¹; Section A is more likely to experience vertical erosion.
C. Section A gradient = 4 m km⁻¹; Section B gradient = 5 m km⁻¹; Section B is more likely to experience vertical erosion.
D. Section A gradient = 5 m km⁻¹; Section B gradient = 4 m km⁻¹; Section B is more likely to experience vertical erosion.
Correct Answer
A
Correct Option:
Section A gradient = 5 m km⁻¹; Section B gradient = 4 m km⁻¹; Section A is more likely to experience vertical erosion.

About This Question

This is Gce Model Questions Vol1 2020 Geography Question 17. It is one of the objective questions from the 2020 Gce Model Questions Vol1 Geography examination.

Difficulty level: Medium .

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