every year, young scientists from schools in the United STates build electric cars that run on batteries. these cars are usually 10 feet long with three or four wheels. the cars race in an event called Electrathon. the winning cars should reach about 48 kilometers using only a few cents worth of electricity.
these electric cars, also called electrathon, use fuel cells. fuel cells are new energy sources that use hydrogen to produce electricity. water, petroleum and other living things contain hydrogen. the best thing about hydrogen is that it only leaves pure water when it is used for electricity. this means that it is environment-friendly.
how about you? what have you been doing to save energy? hmmmm!!!!
readers are you guys do save energy? :P