This downloadable poster shows many different designs of wind turbines that do different jobs. Note that turbines that produce electricity have few, thin blades and those that do mechanical work, e.g. raise water have many bigger blades. This poster forms part of the wind power challenge, a great STEM challenge for 9-18 years that has been accredited for the CREST superstars award scheme.
Wind power challenge - turbine sheet
A poster showing different designs of wind turbines for students to help with their own design...