Where Does the Wind Come From? - Explains how differences in air pressure can cause the wind. - http://www.dpi.nsw.gov.au/__data/assets/pdf_file/0010/139951/where-does-the-wind-come-from.pdf
Australian Government - Bureau of Meteorology - Instructions for students how to measure wind speed with minimal equipment and surprising accuracy. - http://www.bom.gov.au/lam/Students_Teachers/Worksheet16.shtml
FAQ Air Chemistry and Physics - Answers question about the air, gases, the wind, and pressure. - http://www.lenntech.com/FAQ-air-chemistry-physics.htm
Wind - Tells you what is wind, where it comes from, and how we describe the winds. - http://www.hko.gov.hk/education/edu01met/wxobs/ele_winde.htm
What Is Wind? - Explains what wind is, and gives the fastest wind speed ever recorded. - http://eo.ucar.edu/basics/wx_2_c.html
BWEA: What causes the wind? - Explains how the density and pressure changes of air causes wind. - http://www.bwea.com/edu/wind.html
Forces and Winds: Online Meteorology Guide - Describes in detail what causes wind, the different kinds of wind, and the friction the Earth causes. - http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/fw/home.rxml
Blow, Wind, Blow - Demonstration of the Coriolis effect to show why wind blows the way it does. - http://kids.earth.nasa.gov/archive/nino/wind.html
Weather Whiz Kids: Wind - Explain the jet stream, global wind patterns, plus land and sea breezes. - http://www.weatherwizkids.com/wind1.htm