Question

Which phrase describes air density?
A. increases as altitude increases
B. equals mass divided by volume
C. pushes molecules in one direction
D. exerts less pressure as it increases

Answer 1

Answer:

The correct answer is B)equals mass divided by volume.

Explanation:

=> Air density reduces with increase in altitude. Air becomes thinner and thinner.

=>As air density increases, the number of molecules present per cubic meter of air increases, the number of molecules striking a body per unit area of it increases, hence the pressure also increases.

Answer 2

Answer:

bbbbbbbbbbbbbbbbbbbbbbbbbbbb

Explanation: