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Harvest the Wind

Join Connie Tebow in this informative lesson about wind energy, presented by Ag in the Classroom. Discover the benefits, challenges, and facts about windmills and wind farms. Engage in interactive activities, including making your own working pinwheel. Explore the resources available on the Ag in the Classroom website.

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Harvest the Wind

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  1. Harvest the Wind Presented by: Connie Tebow Lesson: Courtesy of Ag in the Classroom

  2. Agenda • What is wind? • AITC’s “Harvest the Wind” lesson. • The Good, The Bad, and The Ugly • Few facts on windmills • Few facts on the wind farms/OSU wind farm • Ag in the Classroom • Make your own working pinwheel

  3. What is Wind? • Wind is air in motion caused by the uneven heating of the earth’s surface by the sun. • Earth has many different surfaces that absorb the sun’s radiation differently. • The hot air over land expands and rises and the heavier, cooler air from over the water rushes in to take its place. • At night this process is reversed.

  4. When the wind blows… • The Good… • The Bad… • The Ugly…

  5. Windmills • Used to pump water, drain land, grind grain, and mill timber. • Uses renewable energy. • Converts kinetic energy to mechanical energy. • Idea created as early as 600 A.D. • American farmers began using windmills during the 1800’s.

  6. Wind Turbine • The first turbine to generate electricity was built in 1888. It was 60 feet tall and had 144 cedar rotor blades.

  7. Today’s Wind Farms • Uses the wind’s energy to generate electricity • At full power they produce 2.3 Megawatts, which is enough to power 600 homes on average. • Landowners receive sealed bid which is different for each owner. Many factors play a part in amount paid. • Two-year study of land area before placement of turbines.

  8. OSU’s Cowboy Wind Farm near Blackwell, Oklahoma… • 26-turbine wind farm, completed in Dec. 2012 • 59.8 megawatts will produce enough power for 17,500 homes • 67% of OSU’s electricity is from wind generation. Natural gas supplies the rest. • Turbines are 80 meters to center of hub, which is 263 feet. • There are wind speed and wind direction sensors at top of the turbine. • Startup is about 3 meters per second, which is 6-7 mph. They produce full power at 9 m/s, which are 18-19 mph winds. • Creates 5 permanent jobs

  9. Ag in the Classroom • A website full of lessons for all grades, complete with standards. • Contests • Grants • Smart board activities • Crafts, games, songs • Teacher training (professional development)

  10. 2013 Summer Tour

  11. www.agclassroom.org/ok

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