Gce Model Questions Vol1 2017 Geography Question 27
Practice objective / multiple choice question 27 from the 2017 Gce Model Questions Vol1 Geography examination.
Consider a river that is 300 km long. Its source is at 1500 m above sea level and its mouth at 50 m. Assume the longitudinal gradient decreases linearly from the source to the mouth, with a gradient of 8 m km\(^{-1}\) at the source and 0.2 m km\(^{-1}\) at the mouth. The upper course is defined where the gradient exceeds 4 m km\(^{-1}\), the middle course where the gradient is between 0.5 m km\(^{-1}\) and 4 m km\(^{-1}\), and the lower course where it is below 0.5 m km\(^{-1}\). Calculate the approximate length (in km, to the nearest kilometre) of each river course.
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About This Question
This is Gce Model Questions Vol1 2017 Geography Question 27. It is one of the objective questions from the 2017 Gce Model Questions Vol1 Geography examination.
Difficulty level: Medium .
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