A 30 C parcel of air at sea level, which is saturated, rises to an altitude of 2,000 meters. What is its temperature at 2,000 m?
a) 48 C
b) 40 C
c) 18 C
d) 10 C
Answer: d) 10 C
Difference between starting point and the altitude : 2000 - 0 = 2000
2000/100 * 1 = 20 C
Difference between the base temperatures : 30-20= 10 C
Therefore, the new temperature at 2000 m altitude is 10 C.
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