Gce Model Questions Vol1 2024 Geography Question 39
Practice objective / multiple choice question 39 from the 2024 Gce Model Questions Vol1 Geography examination.
A river drops a total of 600 m over a length of 120 km. In the upper 30 km the gradient is 8 m/km, while the remaining lower 90 km have a uniform gradient. (a) Find the average gradient of the lower section. (b) If the erosion rate in the lower section is given by \(E = k\,G^{2}\) where \(G\) is the gradient (in m/km) and \(k = 0.05\) m · (m/km)⁻² yr⁻¹, calculate how many years are required for the river to erode a 2 m deep incision in the lower section.
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About This Question
This is Gce Model Questions Vol1 2024 Geography Question 39. It is one of the objective questions from the 2024 Gce Model Questions Vol1 Geography examination.
Difficulty level: Medium .
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