Multiple choice

When a balloon rises to a higher altitude, it bursts because _____.

  1. its inside pressure increases

  2. its outer surface gets heated

  3. outside pressure decreases

  4. it is a natural fact

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

As altitude increases, atmospheric pressure decreases significantly. The helium/hydrogen inside the balloon remains at initial pressure, creating large pressure difference between inside and outside that exceeds the balloon's elastic limit.