Physicshard · Past Paper
The speed of sound is faster on a humid day than on a dry day because humid air is what?
ADenser than dry air
BLess dense than dry air
CHeavier than dry air
DColder than dry air
✓ Correct Answer: B — Less dense than dry air
Humid air contains water vapor, which is less dense than the nitrogen and oxygen it replaces, and sound travels faster in less dense gases.
Share this question