throwing out the window and noticing a large, violent rotating cloud approaching. The rotating cloud called tornado. Tornadoes are one of nature's worst natural disasters. Hundreds of tornadoes hit the United States every year. Each year an average of seventy deaths and 1,500 injuries are caused by a tornado. Tornadoes are caused by changes in the weather. Most of them occur under certain conditions. Supercells are thunderstorms in which tornadoes form inside them. “A super cell takes shape on the boundary of two colliding weather fronts. There, a cool, dry air mass above meets a warm, moist air mass below. A cap separates the two air masses." The wind changes direction and the layer of air begins to rotate. Warm air and cold air meet to create a funnel cloud. The cold air drags the mesocyclone to the ground. The updraft extends and accelerates until it becomes a tornado. Tornadoes are more likely to form when cold air and warm air meet. A tornado has occurred in all fifty states. Ninety percent of tornadoes occurred in Tornado Alley. Tornado Alley includes Texas, Kansas, Nebraska, Iowa, Missouri and Oklahoma. Tornado season begins from early April to June. Tornadoes occur at the most common time, which is from three to nine. This is the warmest period for the soil and the atmosphere. They can occur with little or no warning. Whether small or large, tornadoes can be weak or powerful. “The size of a tornado is not related to its strength” (Allen). Some can move slowly from five miles an hour up to seventy. “Most tornadoes travel at speeds of ten to twenty miles (16 to 32 kilometers) per hour. A tornado has a lifespan ranging from fifteen minutes to three hours." Path destruction depends on the tornado's travel. “Most scientists… middle of paper… dominate and influence a lot of people. Many adults and children may experience different emotions, feelings and thoughts when they experience the tornado. Reminders will persist in evolving hail, winds, watches and warnings. “Common emotional reactions of children and family members exposed to a tornado include:” • Fear that another tornado may occur. • People will have nightmares and have trouble sleeping. • Temperament problems • Stomach pain • Concerns about family members • Loss of appetite Works Cited Allen , Jean. “Chapter 2: Why Tornadoes Happen.” Tornado (9780736805889) (2001): 11 books. Binns, Corey. "KILLER STORMS. (Cover Story)." Science World 67.12/13 (2011): 8. MasterFILE Premier. Network. November 7, 2013.Allen, Jean. "Chapter 3: The Power of a Tornado." Tornadoes(9780736805889) (2001): 21 Book.Favor, Leslie J. Natural Disasters. New York: Facts on File, 2011. Print.

Topic > throwing out the window and noticing a large, violent rotating cloud approaching. The rotating cloud called tornado. Tornadoes are one of nature's worst natural disasters. Hundreds of tornadoes hit the United States every year. Each year an average of seventy deaths and 1,500 injuries are caused by a tornado. Tornadoes are caused by changes in the weather. Most of them occur under certain conditions. Supercells are thunderstorms in which tornadoes form inside them. “A super cell takes shape on the boundary of two colliding weather fronts. There, a cool, dry air mass above meets a warm, moist air mass below. A cap separates the two air masses." The wind changes direction and the layer of air begins to rotate. Warm air and cold air meet to create a funnel cloud. The cold air drags the mesocyclone to the ground. The updraft extends and accelerates until it becomes a tornado. Tornadoes are more likely to form when cold air and warm air meet. A tornado has occurred in all fifty states. Ninety percent of tornadoes occurred in Tornado Alley. Tornado Alley includes Texas, Kansas, Nebraska, Iowa, Missouri and Oklahoma. Tornado season begins from early April to June. Tornadoes occur at the most common time, which is from three to nine. This is the warmest period for the soil and the atmosphere. They can occur with little or no warning. Whether small or large, tornadoes can be weak or powerful. “The size of a tornado is not related to its strength” (Allen). Some can move slowly from five miles an hour up to seventy. “Most tornadoes travel at speeds of ten to twenty miles (16 to 32 kilometers) per hour. A tornado has a lifespan ranging from fifteen minutes to three hours." Path destruction depends on the tornado's travel. “Most scientists… middle of paper… dominate and influence a lot of people. Many adults and children may experience different emotions, feelings and thoughts when they experience the tornado. Reminders will persist in evolving hail, winds, watches and warnings. “Common emotional reactions of children and family members exposed to a tornado include:” • Fear that another tornado may occur. • People will have nightmares and have trouble sleeping. • Temperament problems • Stomach pain • Concerns about family members • Loss of appetite Works Cited Allen , Jean. “Chapter 2: Why Tornadoes Happen.” Tornado (9780736805889) (2001): 11 books. Binns, Corey. "KILLER STORMS. (Cover Story)." Science World 67.12/13 (2011): 8. MasterFILE Premier. Network. November 7, 2013.Allen, Jean. "Chapter 3: The Power of a Tornado." Tornadoes(9780736805889) (2001): 21 Book.Favor, Leslie J. Natural Disasters. New York: Facts on File, 2011. Print.