How to Make a Tornado Out of 2-Liter Bottles

You can make your own tornado out of two bottles connected together.

If you have a science project that requires you demonstrate a vortex or tornado, the best way to do it is to create your own. Unless you have magical powers that allow you to conjure up a full sized tornado, you can create a mini one inside two bottles filled with water.

Things You'll Need

• Two empty two-liter plastic soda bottles
• 1-inch metal washer, 3/8-inch diameter
• Electrical or duct tape
• Dishwashing detergent
• Food coloring
• Tornado Tube plastic connector

Instructions

1. Fill one bottle half way with water and add three drops of dish detergent. For effect you can also add some blue food coloring.

2. Place a metal washer between the mouths of the two bottles and tape the bottles together around the washer with electrical or duct tape. Make sure there is a tight seal.

3. Invert the bottle and verify there are no leaks as the water drains into the bottle on the bottom. To initiate the vortex or tornado, quickly maneuver the bottle in a clockwise manner as it drains.

Tips & Warnings

• Use a Tornado Tube connector instead of the washer and tape.

References

• National Oceanic and Atmospheric Administration: Tornado in a Bottle