The newest kit from Thames and Kosmos, the Wind Power Renewable Energy Science Kit, is a great way to learn all about wind energy, one of the most promising sources of energy today.Comes complete with electric generator, adjustable rotors and wind speed indicator. Includes 20 different experiments to learn all about wind power. You can generate electricity to light an LED or charge a rechargeable battery. Experiment with different numbers of rotor blades, different blade angles and profiles, different wind speeds, different gear ratios, and so on.Full color 32 page manual with illustrated instructions and information about wind energy. Designed for ages 8 and up.