Math in the News: Issue 83

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In this issue of Math in the News we look at Typhoon Haiyan to learn to distinguish between typhoons and hurricanes. This creates an opportunity to use Venn Diagrams as a means of classifying information.

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Math in the News: Issue 83

  1. 1. Math in the News Issue 83 Super Typhoon Haiyan In this issue we look at the typhoon ravaging the Philippine Islands.
  2. 2. To get a better understanding of Typhoon Haiyan, see this video: http://www.youtube.com/watch? v=T0v6Gol83F0
  3. 3. What is a Typhoon?
  4. 4. Source: NOAA If a typhoon looks a lot like a hurricane, that’s because they’re both similar weather phenomena. The following Venn Diagram will show similarities and differences.
  5. 5. Both hurricanes and Typhoons are examples of Tropical Cyclones.
  6. 6. They are similar in structure and have similar physical properties.
  7. 7. Hurricanes occur mostly in the Atlantic and tend to hit the US.
  8. 8. Typhoons occur in the western part of the Pacific and can occur any time of the year.
  9. 9. The Saffir-Simpson Scale • The Saffir-Simpson scale is used to categorize hurricanes based in part on their wind speed. • (Source www.nooa.gov.)
  10. 10. Year Name 2002 Lili 2003 Claudette 2003 Isabel 2004 Alex 2004 Charley 2004 Gaston 2004 Frances 2004 Ivan 2004 Jeanne 2005 Cindy 2005 Dennis 2005 Katrina 2005 Ophelia 2005 Rita 2005 Wilma Category Wind Speed (mph) 1 92 1 92 2 104 1 81 4 150 1 75 2 104 3 121 3 121 1 75 3 121 3 127 1 75 3 115 3 121 Typhoon Haiyan is considered a Category 5 and you can see how it compares to these hurricanes from the past decade.
  11. 11. Your Turn • • • Tropical cyclones also include other weather phenomena. Create a Venn Diagram that includes the relationship among these terms. – Tropical Depression – Tropical Storm – Hurricane – Typhoon Describe the differences among these categories. Use Web resources like www.noaa.gov.

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