which phrase describes air density?\no increases as altitude increases\no equals mass divided by volume\no…

which phrase describes air density?\no increases as altitude increases\no equals mass divided by volume\no pushes molecules in one direction\no exerts less pressure as it increases

which phrase describes air density?\no increases as altitude increases\no equals mass divided by volume\no pushes molecules in one direction\no exerts less pressure as it increases

Answer

Answer:

B. equals mass divided by volume

Explanation:

Step1: Recall density definition

Density $\rho=\frac{m}{V}$, where $m$ is mass and $V$ is volume. This applies to air as well.

Step2: Analyze option A

Air density decreases as altitude increases, not increases.

Step3: Analyze option C

Pushing molecules in one - direction describes force or pressure, not density.

Step4: Analyze option D

As air density increases, pressure generally increases, not decreases.