Neco Model Questions Vol1 2020 Geography Question 9
Practice objective / multiple choice question 9 from the 2020 Neco Model Questions Vol1 Geography examination.
A river drops from an elevation of 350 m at point X to 110 m at point Y over a horizontal distance of 12 km.\n(a) Calculate the average gradient of the river as a percentage.\n(b) The river's average flow speed (in m s⁻¹) is given by \(v = 0.5\sqrt{G}\), where \(G\) is the gradient percentage. Estimate the time (in hours, to one decimal place) for a water parcel to travel from X to Y, assuming the river length is the straight‑line distance between the two points.
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About This Question
This is Neco Model Questions Vol1 2020 Geography Question 9. It is one of the objective questions from the 2020 Neco Model Questions Vol1 Geography examination.
Difficulty level: Medium .
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