Build a Two-Stage Balloon Rocket
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Active Time
45 minutes to 1 hour
Total Project Time
45 minutes to 1 hour
Key Concepts
Energy, Newton’s third law of motion, spaceflight
![]() IntroductionIf you have ever watched a rocket launch on TV, you might have noticed that rockets have multiple stages. Some parts of the rocket fall off and burn up in the atmosphere whereas the rest of the rocket keeps going. Why does this happen? Try this activity to find out and build your own two-stage rocket using balloons! CreditsSabine De Brabandere, PhD, Science Buddies
This activity is not appropriate for use as a science fair project. Good science fair projects have a stronger focus on controlling variables, taking accurate measurements, and analyzing data. To find a science fair project that is just right for you, browse our library of over 1,200 Science Fair Project Ideas or use the Topic Selection Wizard to get a personalized project recommendation.
Materials
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Active Time
45 minutes to 1 hour
Total Project Time
45 minutes to 1 hour
Key Concepts
Energy, Newton’s third law of motion, spaceflight
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