The atmosphere:
A) becomes less dense with increasing altitude.
B) becomes more dense with increasing altitude.
C) remains at constant density with increasing altitude.
D) becomes less dense throughout the troposphere and then more dense in the stratosphere.

Question

Quizplus · Accepted Answer

The atmosphere becomes less dense with increasing altitude. This is because there is less air pressing down from above. As altitude increases, there is less atmospheric pressure, which allows air molecules to spread out and become less dense. This trend continues until the atmosphere transitions into space, where there is virtually no atmosphere at all.

The Atmosphere