Question

What is the normal lapse rate for temperature decreases?

1) 1°C per 1000 m
2) 2°C per 1000 m
3) 3°C per 1000 m
4) 4°C per 1000 m

Answer 1

The standard lapse rate is approximately 6.5°C per 1000 m, thus the closest answer from the choices given is 3°C per 1000 m, which is option 3.

Step-by-step explanation:

The normal lapse rate for temperature decreases in the troposphere is approximately 6.5°C per 1000 m. None of the options provided directly match this value. However, if we need to choose the closest one, it would be option 3, which states a lapse rate of 3°C per 1000 m. The actual average or standard lapse rate, as defined by the International Standard Atmosphere (ISA), is the 6.5°C decrease per kilometer as one ascends through the troposphere up to the tropopause.