Holes That Do Not Leak!

Here's how.

Active Time

10-20 minutes

Total Project Time

10-20 minutes

Key Concepts

Air pressure, water pressure, surface tension

https://www.youtube.com/watch?v=UbWxBLbr33k

Introduction

Did you know that at sea level there are about 15 pounds of air pressing on each square inch of your body? This air is very helpful in our daily lives. For example, this layer of air helps to keep the Earth from getting inhospitably cold or hot. It can even help keep a bottle with holes in it leak-free! Try the activity to find out how.

Credits

Sabine 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.

Next: Materials

Materials

Sturdy plastic bottle with tight-fitting lid, 750 milliliters to 2 liters works well
Water, enough to fill the bottle
At least four pushpins
Work area that can get wet
Baking sheet with a rim
Sink
Towel or cloth for cleanup
Optional: food coloring
Optional: More sturdy plastic bottles
Optional: More water