Museum of Science and Industry


Fly a Hot-Air Balloon

Step 10 of 10: What's happening?

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Key Terms Defined


Convection current
Air or liquid moving from place to place while carrying heat

When the air inside the balloon is heated, the molecules in the air begin to move around and spread out, and the air becomes less dense. The surrounding, colder air falls beneath the hot air. This forces the warm air upward, which pushes the balloon up with it. The moving warm air creates a convection current.


Museum Hours
  • through December 20:
    Monday - Friday: 9:30 a.m. to 4 p.m.
    Saturday - Sunday: 9:30 a.m. to 5:30 p.m.
    Open daily except Thanksgiving and Christmas
More Information

Museum Location
Museum of Science+Industry
5700 S. Lake Shore Drive
Chicago, IL 60637
1 (773) 684-1414
Getting Here

Buy Tickets Online

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