What happens to molecules in air as altitude increases in the troposphere?

Question

A. They get closer to each other?
B. They stay at the same temperature
C. They become denser
D. They move farther apart from each other

Answer 1

As altitude increases in the troposphere, the correct answer is:

D. They move farther apart from each other.

As you climb higher in the troposphere, air pressure decreases, which causes air molecules to spread out more and move farther apart. This results in lower density of the air at higher altitudes. Additionally, the temperature generally decreases with increasing altitude in the troposphere, although there can be variations due to weather conditions.