In one way or another, almost every form of energy we use originates as energy from the sun. Solar energy directly powers photovoltaic cells and thermal collectors. Indirectly, we get power from plants grown by the sun, oceans heated by the sun, and Earths weather systems sustained by the sun. Even the energy stored in fossil fuels originated as energy from the sun, captured by plants and animals millions of years ago. Physics Solar Workshop explores the topic of solar energy, focusing on photovoltaic cells. By building 12 models and conducting 30 experiments, you will learn how solar cells transform light into electrical energy, and how motors and mechanical devices can optimize the work done by this energy. With this solar power constructive toy you will build different types of vehicles and machines to demonstrate how gears can convert and transform power for different needs. The models that you build with this solar energy learning toy are solar-powered tractor, truck, treaded vehicle, car, elevator, drawbridge, fan, airplane, mobile crane and construction crane. The Physics Solar Workshop from Educational Toys Planet comes with 320 parts, also compatible with the other kits in Thames & Kosmos Physics line. The 64-page book offers illustrated instructions for the projects. This solar energy science toy is developed with Greenpeace in Germany.