Which of the following statements about the atmosphere is TRUE?
A) Pressure increases with elevation.
B) Most of its mass is relatively close to the ground.
C) It has a sharply defined top called the atmopause.
D) Temperature decreases uniformly with height.
E) It is well-mixed from bottom to top

Question

Quizplus · Accepted Answer

Most of the atmosphere's mass is concentrated in the lower layers, close to the Earth's surface, due to gravitational pull. This is why air pressure decreases with elevation, not increases. The atmosphere does not have a sharply defined top but gradually thins out into space. Temperature changes with height are not uniform but vary across different atmospheric layers, and the atmosphere is not well-mixed from bottom to top, with composition varying by altitude.

Which of the Following Statements About the Atmosphere Is TRUE