Informative Speech Outline On Tornadoes

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Tornadoes Purpose: To inform the audience about tornadoes. Introduction Attention Getter: What can hurdle automobiles through the air, rip ordinary homes to shreds, and travel at speeds over 60 mph? Topic Orientation: Topical Credibility: I researched the topic of tornadoes, and it’s most common to happen in parts of Texas, Oklahoma, Nebraska, eastern Colorado and western Iowa can also be referred as Tornado Alleys because of the warm and humid weather. Relevance: Well, tornadoes continue as they always have to tear out wide areas of human made structures, automobiles, or even entire small cities in Tornado Alley. Credibility: I researched the topic of tornadoes and the most common in the state of Illinois, rather than any…show more content…
II. Types of tornadoes A. According to Dr. David Ludlum, author of the 1997 edition of the National Audubon Society’s Field Guide to North American Weather, tornado researchers use a scale, known as the Fujita-Pearson Tornado Intensity Scale to rate the intensity of tornadoes. a. Weak tornadoes 1. Account for 69% of all tornadoes. 2. Winds are less than 110mph. b. Strong tornadoes 1. Account for 29% of all tornadoes. 2. Winds range from 110 to 205 mph. c. Violent tornadoes 1. Represent only 2% of all tornadoes. 2. Winds exceed 205 mph. Conclusion In this speech I have explored what cause tornadoes to develop, how researchers classify types of tornadoes. So the next time, you see your college dorm being dismantled floor by floor, or a chicken without wings, take cover because tornado season is here. References Davies-Jones, R. (1995). Tornadoes: The storms that spawn twisters are now largely understood, but mysteries still remain about how these violent vortices form. Scientific American. 273(2)
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