Question

Air leaves a tire when the tire valve is opened because

Answer 1

Air leaves a tire when the tire valve is opened because  "the pressure outside the tire is lower than the pressure inside the tire".

Answer: Option A

Explanation:

When air is filled in tires it get into more compact area than outer atmosphere, therefore particles in the tire are very close to each other and exert pressure continuously on tire walls to get out of it. Thus the material of tire need to be pressure resistant as much possible, here quality of tires lie actually.

After opening the tire valve, air start leaving with huge sound as the strain outside the tire is weaker than that inside the tire. The molecules strike with the same force on a larger area and pressure starts diminishing.