Tornado in a Bottle - kids science experiment

Tornado in a Bottle ? ages 3 ? For this simple experiment we recommend using a tornado tube but you can also make a version using a washer and duct tape. Fill a 2 liter soda bottle 3/4 full of water. (We also added some glitter for fun!) Then attach the tornado tube and another 2 liter bottle to the other end of the tornado tube. Now flip the bottle with water upside down, give it a swirl and watch the vortex form as the water moves quickly into the other bottle. So much fun and my boys have played with th