JAMB - Geography (2023 - No. 62)
What is the temperature around an aeroplane flying at an altitude of 4000metres if the temperature on the earth's surface is \(40ºc\)?
\(14^0C\)
\(66^0C\)
\(26^0C\)
(\12^0C\)
توضيح
Lapse rate is simply described as 0.65°C per 100m of ascent or 6.5ºC per 1000m of ascent.
Therefore 4000m of ascent= 6.5ºC x 4000m/1000m=26.0ºC
Then, the temperature around the aeroplane is = 40ºC - 26ºC = 14°C
Therefore 4000m of ascent= 6.5ºC x 4000m/1000m=26.0ºC
Then, the temperature around the aeroplane is = 40ºC - 26ºC = 14°C