Experiment No. 4 Pressure Matters Experiment: To examine Daniel Bernoulli's Principal. Materials:
1) Place two ping pong balls a little apart on a table. 2) Using a straw, blow lightly in between the balls and watch what happens. Result: The balls come together. Conclusion: The ping pong balls come together because the moving air (which you blow through the straw) creates low pressure - moving air is at a lower pressure than still air, which is higher pressure. Think of a weather map. Air pressure can tell us about what kind of weather to expect. If a high pressure system in on its way, often you can expect cooler temperatures and clear skies. If a low pressure system is coming, then look for warmer weather, storms and rain. The ping pong balls come together because the stiller air outside of the balls exerts a higher pressure than the moving air between them. The higher pressure pushes the balls together.
Flying Counters | Under Pressure | Make Your Own Helecopters | Pressure Matters | Bernoulli's Principal |
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