Using two empty 2L soda bottles, water, glitter, and tape, one can create a miniature tornado in a bottle. The empty bottle is placed upside down on the bottle containing water and glitter. Tape is wrapped around the middle of the bottles to secure them. By quickly spinning the joined bottles, the water and glitter will swirl and form a tiny tornado in the top bottle. Tornadoes in the real world form when winds move in opposite directions, causing the air to spin both horizontally and vertically as warm air rises and cold air sinks.

1. How to Make a Tornado in a Bottle
Materials:
 2 x 2Lsoda bottle
 1 roll of sticky tape
 1.3Lwater
 1 spoon
 2 spoonsfull of glitter
Method:
1. Take the lids off the soda bottles.
2. Take the labels off the sodabottles.
3. Putthe 1.3Lof water inside onesoda bottle.
4. Put2 spoonsof glitter inside the sodabottle with the water.
5. Tip the empty sodabottle up side down place it on top of the
another soda bottle very carefully.
6. Roll the tape around themiddleof the 2 soda bottles.
7. Putone hand top of the soda bottle.
8. Putanother hand middleof the sodabottles.
9. Turn the soda bottles and quickly spin the bottles 3 or 4 times.
10. Observe what happensto the top soda bottle.
Discussion:
How do tornadoeshappen in the real world?
Tornadoeshappen when the two windsmovein oppositedirections.
The windsdon’twant bump each other so they spin horizontally.
Next, warm air movesupward (updraft) so the air spins vertically.
After that, cold air comes down and pullsthe tornado to the ground.
Tornadoescan destroy many things such uscars, buildingsand
plants. Tornadoescan picks up dustand debris. Tornadoespath can
be up to 40km long.