How do you make a tornado in a bottle?
Fill the plastic bottle with water until it reaches around three quarters full. Add a few drops of dish scrubbing  liquid. Put the cap on tightly. Turn the bottle upside down and hold it by the neck.
Fill the plastic bottle with water until it reaches around three quarters full. Add a few drops of dish washing liquid. Put the cap on tightly. Turn the bottle upside down and hold it by the neck.