We just learned about the type of weather the snow roller.
Another type of weather is a tornado.
Tornadoes are a column of air that is spinning violently, and is touching both the ground and the clouds.
They are very dangerous, and have nicknames like twisters and cyclones.
![tornado](https://upload.wikimedia.org/wikipedia/commons/thumb/9/98/F5_tornado_Elie_Manitoba_2007.jpg/640px-F5_tornado_Elie_Manitoba_2007.jpg)
(from: wikipedia - tornado)
Kid Facts - Blast from the past: Hydrogen