1. How to Make a Tornado in a Bottle
Materials:
2 x 2 Liter 2 bottles with the same shape
big roll of sticky tape
1 L water
1 toy person
glitter
Method:
1. Take the label off the 2L bottles.
2. Pour water into one bottle.
3.Put the toy person in the bottle that has water in it.
4.Put some glitter in the bottle that has the water and the toy person in it.
5. Put the empty bottle on top of the filled bottle, so the tops match exactly.
6.After doing that, tape the bottles together 50 or 70 times.
7.Turn the bottles up side down and shake it like a circle.
8. Observe the vortex.
9. Let 20 people try this experiment.
The Science Behind It:
Real tornados happen usually in thunderstorms. Tornadoes travel through the
air at200 or 300 km per hour!The weather announcer warns people on TV,
radio or in sirens. If a tornado comes, go inside the basement or storm shelter.
A tornado gets stronger and faster if it collects things. Tornado first starts with
a thunder cloud. Cool air meets warm air and it spins in circles. An updraft wind
makes the tornado turn vertical and a downdraft wind pulls it down to touch
the ground.