volume_mute

Air Density at High Altitudes

publish date: 2026/05/19 19:14:46.941203 UTC

volume_mute

Based on the kinetic theory, would you expect the air to be more or less dense on a mountain top compared to sea level?

More dense

Less dense

The same density

Density is not affected by altitude

Correct Answer

Less dense

Explanation

Since pressure is lower at higher altitudes, the molecules are more spread out, meaning the air is less dense. This is why it can be harder to breathe on mountain tops.

Reference

Basic Physics: A Self-Teaching Guide

Quizzes you can take where this question appears

Pressure in gases