Neco Model Questions Vol1 2023 Geography Question 50
Practice objective / multiple choice question 50 from the 2023 Neco Model Questions Vol1 Geography examination.
A plateau is being uplifted at a constant rate of \(0.2\) mm yr\(^{-1}\). A river incises into the plateau at a rate of \(0.5\) mm yr\(^{-1}\) relative to the uplifted surface. Starting from sea level, determine:\n\na) The time required for the river valley to reach a depth of \(150\) m.\n\nb) If the river length from its source to the mouth is \(30\) km, calculate the average gradient of the river after this time.
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About This Question
This is Neco Model Questions Vol1 2023 Geography Question 50. It is one of the objective questions from the 2023 Neco Model Questions Vol1 Geography examination.
Difficulty level: Medium .
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