About what percentage of the molecules that make up the atmosphere are below an aircraft that flies at an altitude of 6 kilometers?
A) 30%
B) 40%
C) 50%
D) 20%
E) more than 50%

Question

Quizplus · Accepted Answer

More than 50% of the atmosphere's molecules are below an aircraft flying at an altitude of 6 kilometers. This is because the Earth's atmosphere is denser closer to the surface, and the majority of atmospheric mass is contained within the first few kilometers above the Earth's surface.

About What Percentage of the Molecules That Make Up the Atmosphere