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WEATHER PATTERNS Lesson 4. Key Question. How does a thunderstorm develop?. Student Objective Friday, August 29, 2014. OBJECTIVE: SWBAT explain the formation of thunderstorms. Homework : Describe three different ways to demonstrate thunder. Before Your Warm-Up. QUIZ – but not a quiz?
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WEATHER PATTERNS Lesson 4 Key Question How does a thunderstorm develop?
Student ObjectiveFriday, August 29, 2014 • OBJECTIVE: SWBAT explain the formation of thunderstorms. • Homework: Describe three different ways to demonstrate thunder.
Before Your Warm-Up • QUIZ – but not a quiz? • This will not count towards your grade • Help Mr. Shelton measure how much you learn
Warm Up • How can you tell when a thunderstorm is coming your way? • If you went outside 15 minutes after a thunderstorm passed by, what evidence would you see that the storm had been there?
Today’s Activities • Review warm-up • Life cycle of a thunderstorm • Lightning and Thunderstorm W/S • CyberEd – Weather and Atmospheric Processes – Weather #14b • Thunderstorm information on internet
Life Cycle of a Thunderstorm • Warm, humid air rises in an updraft
Life Cycle of a Thunderstorm • Updraft continues higher • Cumulonimbus cloud • Hail may develop • Cold downdraft begins
Life Cycle of a Thunderstorm • Cold downdraft eventually makes the storm dissipate
Lightning Evidence • 30,000 °C - hotter than the sun • May cause fires • Severe electrical shock • Lightning strikes on sand can produce fulgurites
Activities • Lightning and Thunderstorms W/S • CyberEd activity • Thunderstorm details • http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/svr/type/home.rxml
Lightning Strikes • Look at these maps showing the locations of lighting strikes: • http://edot.lanl.gov/event_animations/199906_us_4.gif (June 1999) • http://www.weather.com/maps/activity/golf/uslightningstrikes_large_animated.html (today) • Is there a pattern to where lightning occurs? Why would some locations have more lightning than others?
Conclusions • Why do we mostly experience thunderstorms in the spring & summer?