Image for How tornadoes are formed

How tornadoes are formed

Duration: 07:34

Presenter Helen Czerski goes to the USA to experience the power of a real tornado. She meets up with an expert named Josh Wurman to show how the physics of Earth’s unstable atmosphere form tornados, but only when the conditions are right.

Available since: Mon 26 Nov 2012

This clip is from

Orbit: Earth's Extraordinary Journey - Learning Zone

Kate Humble and Dr Helen Czerski follow the Earth's voyage around the sun.

First broadcast: 03 May 2012

Image for Orbit: Earth's Extraordinary Journey - Learning Zone Not currently available on BBC iPlayer

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.

Added. Check out your playlist Dismiss