BY: THOMAS NIEDRINGHAUS TORNADOES

Tornadoes What is a Tornado? Where do Tornadoes mostly happen in the U.S.A? Where do often do they happen on the planet Earth?

How they get measured. Lowest Ef- 0 Highest Ef- 5

This was in 1884

This was a rescue search in Alabama

How a tornado is formed A tornado is formed by a cold front mixing with a warm front going In opposite directions vies- versa causing it to spin when they meet thus causing a tornado. Sky is usually green and is a During a thunder storm

What do tornadoes cause other than tornadoes Water Spouts ( when a tornado goes on water). Dust devils (when a tornado meets sand and they mix).

Where Tornadoes happen most often in the USA Tornado Alley!!!!

Key Terms Dangerous Funnel conventional radar: instrument that detects the location, movement, and intensity of precipitation, and gives indications about the type of precipitation. It operates by emitting microwaves, which are reflected by precipitation. Also called radar. Doppler radar: a sophisticated type of radar that relies on the Doppler effect (the change in frequency of waves emitted from a moving source) to determine wind speed and direction, as well as the direction in which precipitation is moving. fair-weather waterspout: relatively harmless waterspout that forms over water and arises either in conjunction with, or independently of, a severe thunderstorm. Fujita Intensity scale: scale that measures tornado intensity, based on wind speed and the damage created. funnel cloud: cone-shaped spinning column of air that hangs well below the base of a thunderstorm cloud. mesocyclone: region of rotating updrafts created by wind shear within a supercell storm; it may be the beginnings of a tornado. multi-vortex tornado: tornado in which the vortex divides into several smaller vortices called suction vortices. NEXRAD: acronym for Next Generation Weather Radar, the network of 156 high-powered Doppler radar units that cover the continental United States, Alaska, Hawaii, Guam, and Korea. suction vortices: small vortices within a single tornado that continually form and dissipate as the tornado moves along, creating the tornado's strongest surface winds. supercell storm: the most destructive and long-lasting form of a severe thunderstorm, arising from a single, powerful convective cell. It is characterized by strong tornadoes, heavy rain, and hail the size of golf balls or larger.

Scientist Gregory S. Forbes ( Studied under Ted Fujita). Ted Fujita ( Made the break through of the Fujita scale with the he of Gregory S. Forbes).

Movie

thanks Picture of fujita scale thanks to google images "Tornado, 1884." Dangerous Planet. Gale, Gale Science In Context. Web. 2 Feb "Rescue Workers Search for Survivors after Tornadoes in Alabama." Gale Science in Context. Detroit: Gale, Gale Science In Context. Web. 2 Feb Tornado formation pic from weatherwizkids.com.

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