Kate's Corner: Water bottle race

By  | 

BRIDGEPORT, W. Va (WDTV) - This edition of Kate's corner is more of a competition than an experiment.

What you need is two identical water bottles filled with the same amount of water and a bucket to catch the water.

Grab a friend and see who can empty their bottle the fastest. The only rule is you are not allowed to squeeze the bottle while emptying it.

I asked Andrew Havranek for help in this endeavor. He took the classic approach of just holding downwards and hoping for the best. I however used my scientific expertise and swirled my bottle while emptying it.

My technique made a huge difference in time.

Since air has to come in to the bottle as the water is coming out, Andrew took longer. The air and the water have to take turns passing through the mouth of the bottle.

My swirling action created a vortex within the bottle. A vortex is a region of flow that is rotating around a centerline.

This made it easier for air to come into the bottle and allows the water to pour out faster.

Try it yourself and see how long it takes you to empty using both methods.