Question

Which has the greater density?.

A. Air at low altitude.
B. Air at high altitude.
C. It remains constant.

Answer 1

Air at high altitude has a lower density than air at low altitude.

Step-by-step explanation:

The density of air at high altitude is less than the density of air at low altitude. As altitude increases, the air becomes thinner and less dense. This is because the air pressure decreases with increasing altitude, causing a decrease in the number of air molecules per unit volume.

For example, at an altitude of 8,828 meters above sea level (the top of Mount Everest), the air density is only 0.023 kilograms per cubic meter, compared to approximately one kilogram per cubic meter at an altitude of 500 meters.

Therefore, the correct answer is B. Air at high altitude has a lower density than air at low altitude.