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Project: Tornadoes

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Joshua Lee

on 28 April 2010

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Transcript of Project: Tornadoes

The F-4 Tornado The F-5 Tornado •The most violent Tornadoes occur in the United States.
•A distinctive tornado lasts for a few minutes.
•Every single tornado you see has its own color, sound and shape.
•A Tornado can occur at any time, but most often between 3pm and 9pm.
•A tornado is a powerful storm.

•Small tornadoes sometimes form bigger tornadoes.
•The deadliest Tornado happened in 1925.
•Tornadoes come from the Spanish word, “tronada”, meaning thunderstorm.
•“Dust Devils” are strong tornadoes that cross over desert areas.
•“Some people in ancient times thought dust devils were ghosts”.
•The safest place to be during a Tornado is being underground, which makes basements perfect shelters to get away from Tornadoes.
•Most of the world’s vicious tornadoes occur during summer in mid-western states of the US.

Bibliograhpy http://tornado-facts.com/ Tornado facts!
http://amazing-tornado-facts http://angelfire.com/nj4/tornadoes/page2.html
F-Scale (Fujita Scale) WHAT IS A TORNADO?
A tornado is a natural disaster that can
destroy nature easily. A tornado is a
powerful storm. Tornadoes can be made
if warm air gets trapped beneath a layer
of cold air on top. Tornadoes can get you
trapped if you get too close to it. A tornado is a dark funnel-shaped cloud made up of violently rotating winds that can reach speeds of up to 300 m.p.h. WHERE DO TORNADOES OCCUR? Tornadoes have hit the U.S. most often. Alot of tornadoes occur in what is known is called a "Tornado Alley." The southern and northern border of the alley usually goes from central Texas to Nebraska and Lowa. According to the National Academy of science, the temperature has increased over the past two decades, which means the appearences of tornadoes throughout the U.S. will increase. The Fujita Scale (F-Scale) is a scale that rates the intensity of a tornado, based on the damage that the tornado has done on the human-built structures and vegetation. The Fujita scale classifies tornadoes according to the damage they cause. Almost half of all tornadoes fall into the F1 or "moderate damage" category. These tornadoes reach speeds of 73-112 m.p.h. and can overturn automobiles. The F-Scale - Destroy buildings, bridges and anything in the tornadoes path
- Death
- Flooding
- Hail Damage
- Wind Damage (can reach 140 mph
- Fire Types of Devestation: Thunderstorms produce lightning, rain, wind and hail. All if these can be really dangerous when a tornado is formed. Each upward and downward pair in a thunderstorm is called a cell. A super cell is formed when more than one cell comes together. Tornadoes form when the southwest downdraft meets the westerly updraft. The spinning is caused by the universal patterns. The lower the air pressure, the more violent the storm and the greater the rotation. Fire Tornado Tornado VS A man-made fire
Tornado A natural tornado - Most tornadoes last for less than 10 minutes, but some can last for many hours.
- Most tornado deaths in one year: 519 (1953)
- Fewest tornado deaths in one year: 15 (1986)
- Tornadoes have three stages: the developing stage, the mature stage, and the misusing stage.
Thunderstorms More Info About Tornadoes Tornadoes
By : Joshua L. / Yasin M.
Yasin M. / Joshua L. A dark funnel-shaped cloud tornado Where tornadoes have been hitting
US recently or most of the times.
Full transcript