Force
Properties of Matter
Indestructible Bag
Enrichment Activity for 5-11 11-14
- Level Elementary
What you need
- Water
- Clear plastic watertight bag (e.g. watertight, resealable food bag)
- Some pencils
Instructions
- Fill the plastic bag with water
- Push a pencil through the bag
- Then another... and another
Results and Explanation
The bag doesn't burst because the plastic stretches rather than tears as the pencils are pushed through it. If you take a pencil out you can plug the leak simply by putting it back through the holes.
