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This Can Gravity Push Something Up? lab resource also includes:
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How does a hot air balloon fly? An experimental lesson has scholars build a balloon from a garbage bag and monitor the movement of air. As the temperature of the air in the balloon increases, gravity moves the denser cool air down, causing the balloon to rise.
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Concepts
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Instructional Ideas
- Build different sizes of balloons to observe the different rates of movement
Classroom Considerations
- Best if done outdoors to allow room for the balloon to move
- Requires an understanding of the movement of gas molecules
Pros
- Uses easily obtainable materials
- Includes step-by-step instructions for pupils to follow
Cons
- None