Question

which statement accurately describes the relationship between air pressure, air density, or altitude?
as altitude increases, pressure increases.
as altitude increases, air density increases.
air pressure and density are lowest at sea level.
denser air exerts more pressure than less dense air.

Explanation:

• Air pressure decreases as altitude increases because there is less air mass pressing down from above.
• Air density also decreases with altitude, as the atmosphere thins out with higher elevation, so sea level has the highest air pressure and density, not the lowest.
• Denser air has more molecules in a given volume, so these molecules exert more force (pressure) on their surroundings compared to less dense air.

Answer:

D. Denser air exerts more pressure than less dense air.