|Tornadoes are spinning columns of air|
Richter scale!!! Remember? Check the crab's video about what to do in case you're in a coastal landscape and there's a tsunami. You'll also find some curious indications about the Richter scale. There is also some astonishing data regarding tornadoes.
Have fun! and don't forget that there are many other web pages with interesting information that you can find surfing through the internet.