JAMB - Geography (2025 - No. 53)
The temperature reading at the peak of a volcano is 6ºC. What will be the temperature at the foot of the volcano, which is 3000 metres from the surrounding low land?
25.5°C
13.5°C
23.5°C
5.5°C
Explanation
Assuming a lapse rate of 6.5ºC per 1000 meters, for 3000 meters, the temperature difference would be approximately 19.5ºC. If the temperature at the peak is 6ºC, at the foot it would be around 25.5ºC.
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