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Tornado

en.wikipedia.org/wiki/Tornado

A tornado is a violently rotating column of air that rotates while in contact with both the surface ... The Fujita scale rates tornadoes by damage caused and has been replaced in some countries by t...

Tornado Facts: Causes, Formation & Seeking Shelter - Live Science

www.livescience.com/21498-tornado-facts.html

Apr 19, 2016 ... Tornadoes are violent storms that kill 80 people each year. Here are some facts about how they form and how to stay safe.

www.ask.com/youtube?q=What Causes Tornadoes&v=ep2YY_D7wdk
Dec 12, 2013 ... This is a Science Made Easy Video. A quick and fun cartoon lesson about tornadoes. Great for teachers and students- hope you guys enjoy!

Severe Weather 101: Tornado Basics

www.nssl.noaa.gov/education/svrwx101/tornadoes/

How is tornado strength rated? The most common and practical way to determine the strength of a tornado is to look at the damage it caused. From the damage ...

What Causes Tornadoes? - Science 2.0

www.science20.com/news_articles/what_causes_tornadoes

Jun 6, 2010 ... Tornadoes are capable of 250 MPH wind speeds, cutting a swath of ... This is the same process that causes an ice skater to spin faster when ...

WHAT CAUSES TORNADOES AND HURRICANES?

www.theweatherprediction.com/basic_weather_questions/tornadoes_hurricanes.html

A tornado is rapidly spinning air that develops from a thunderstorms and is ... This rising air is what causes all the rain and hail to form from the water in the air.

What causes tornadoes? | MNN - Mother Nature Network

www.mnn.com/earth-matters/translating-uncle-sam/stories/what-causes-tornadoes

Apr 8, 2014 ... The U.S. has more tornadoes than anywhere else on Earth, but their sudden twists and turns still make them mysterious and mesmerizing.

About Tornadoes | Weather Underground

www.wunderground.com/resources/education/tornadoFAQ.asp

What causes tornadoes? Tornadoes form under a certain set of weather conditions in which three very different types of air come together in a certain way .

Types and Causes of Tornadoes - Conserve Energy Future

www.conserve-energy-future.com/types-and-causes-of-tornadoes.php

Types and Causes of Tornadoes: A tornado is a strong, turbulent column of air, moving fast and keeping in contact with the earth's surface and a vertically ...

What causes tornadoes? - Weather - Weather News | NBC News

www.nbcnews.com/id/9007188/ns/weather-weather_news/t/birth-tornado/

Birth of a tornado. Below: x. Jump to discuss comments below. discuss. x. IMAGE: SATELLITE VIEW OF KATRINA. Next story in Weather News 2006 forecast: ...

Answer
Clouds form when water vapor condenses in the air. This releases heat, which increases the updraft temperature and the kinetic energy of air movement. In supercell thunderstorms, updrafts are strong and may create a vortex of air that may form a tornado.
Most scientists consider this to be a simplified and incomplete explanation. The finer details of tornado formation and dissipation are still unknown.
More Info

What causes tornadoes?

www.weatherquestions.com

May 30, 2013 ... The intense spinning of a tornado is partly the result of the updrafts and downdrafts in the thunderstorm (caused by the unstable air) interacting ...

What causes a tornado to form? | Reference.com

www.reference.com

According to the National Oceanographic and Atmospheric Administration, tornadoes form when warm air creates a rotating updraft in a powerful thunderstorm.

Tornadoes - Weather Wiz Kids weather information for kids

www.weatherwizkids.com

A tornado is a violent rotating column of air extending from a thunderstorm to the ... Waterspouts can sometimes move inland, becoming tornadoes causing ...