Neco Model Questions Vol1 2018 Geography Question 35
Practice objective / multiple choice question 35 from the 2018 Neco Model Questions Vol1 Geography examination.
The mean annual temperature of a region is \(22^{\circ}\)C and the mean annual rainfall is \(1200\) mm. The area lies at an altitude of \(1500\) m and has an average slope of \(15^{\circ}\). Using the simplified Thornthwaite equation for potential evapotranspiration \(PET = 0.0023\,(T+17.8)\,R_a\) (where \(T\) is temperature in °C and \(R_a = 20\) MJ m\(^{-2}\) day\(^{-1}\)), (a) estimate the annual PET in mm (assume 1 MJ m\(^{-2}\) day\(^{-1}\) ≈ 0.1 mm day\(^{-1}\)). (b) Compute the aridity index \(AI = PET / \text{rainfall}\). (c) Based on the AI (humid if \(AI < 0.65\), semi‑arid if \(0.65 \le AI < 1\), arid if \(AI \ge 1\)) and the altitude, state the most likely vegetation zone for the region.
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About This Question
This is Neco Model Questions Vol1 2018 Geography Question 35. It is one of the objective questions from the 2018 Neco Model Questions Vol1 Geography examination.
Difficulty level: Medium .
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