NASA
Nasa: Global Wind Patterns
This site from NASA lists and defines global wind patterns. It features a graphic of these patterns and a self-test with answers.
NASA
El Nino: Making Sense of the Weather: Global Wind Patterns
This is an educational site offered by NASA that has information on global winds, including prevailing westerlies, with illustrations. Included is a short activity to illustrate the winds.
University Corporation for Atmospheric Research
Ucar: Wind
Wind is air moving from a place that has higher pressure to one that has lower pressure. Sometimes wind is just a light breeze and other times it is strong enough to blow the roofs off buildings.