Solar Energy— energy from the sun • Solar cells can be mounted on roofs of buildings to produce electricity and heat energy.
Hydroelectric Power—energy from water
• Machines inside of dams can change moving water
into electrical energy.
Wind Energy—Moving air can turn the blades of
windmills. The windmills change the wind energy into
Nuclear Energy—energy that is given off by splitting
the nucleus of an atom (uranium)
Geothermal Energy—energy from heat from
melted rock deep below the Earth’s surface
Biofuels—renewable energy made from biomass
(crops, wood, trash, manure)