How long does it take to empty a soda bottle full of water? The answer lies in swirling the water to create a vortex. The vortex looks like a tornado in the bottle. The formation of the vortex makes it easier for air to come into the bottle and allows the water to pour out faster. My boys Scotty, Mark and Jack helped me with the demonstration.
To discover some of the scientific properties of air and water and empty a full bottle of water in seconds, read the Vortex Racing experiment.