Water Bottle Fountain
		Materials: A plastic, one-liter bottle with three holes Three push pins to plug the holes A bottle cap A shallow basin

Procedure: Use the pins to puncture 3 holes in the bottle. Fill the bottle with water and allow it to flow out of the bottle. If you cap the bottle, you can stifle the flow. You can also squeeze the capped bottle to demonstrate increasing the pressure above the water.

Explanation: The static pressure of the water increases with depth. The pressure difference across the pin holes forces the water out. One can estimate the distance of each stream by using simple physics to estimate how far the water stream will go.