Build Solar Water Heater

I have a science project and I have to expalin to the judge what happends during the process of solar energy. Can you please summurize it in simple, easy to remember terms?

I’m looking for sites that contain statistics, charts, diagrams of how much fossil fuels countries use, and how much progress they’ve made in using renewable energy sources such as solar, wind, hydro, and nuclear power.

I’m giving my class a quiz, and I’m in serious need of some solar energy quiz questions. Please! Can I get some questions? Anything will do that is around the 5th/6th grade level. Thanks a bunch! Tali.