Fuel Combustion Fossil Fuel Hydrocarbon Energy Transformation A substance that provides energy as the result of a chemical change Energy Transformation A change from one form of energy to another Combustion The process of burning a fuel Fossil Fuel An energy rich substance ( such as coal, oil or natural gas) formed from the remains of organisms Hydrocarbon A energy rich compound that contains hydrogen and carbon atoms

Petroleum Refinery Petrochemical Solar Energy Hydroelectric Power Liquid fossil fuel, oil Refinery A factory in which crude oil is heated and separated into fuels and other products Petrochemical A compound made from oil Solar Energy Energy from the Sun Hydroelectric Power Electricity produced using the energy of flowing water

Biomass fuel Gasohol Geothermal Energy Nucleus Nuclear Fission Fuel made from living things Gasohol A mixture of gasoline and alcohol Geothermal Energy Heat from the Earth’s interior Nucleus The central core of an atom that contains protons and neutrons Nuclear Fission The splitting of an atom’s nucleus into two smaller nuclei and neutrons

Reactor Vessel Fuel Rod Control Rod Meltdown Nuclear Fusion The part of a nuclear reactor where nuclear fission takes place Fuel Rod A uranium rod that undergoes fission in a nuclear reactor Control Rod A cadmium rod used in nuclear reactors to absorb neutrons from fission reactions Meltdown A dangerous condition in which fuel rods inside a nuclear reactor melts Nuclear Fusion The combining of two atomic nuclei to produce a single larger nucleus and much energy

Efficiency Insulation Energy Conservation The percentage of energy that is used to perform work Insulation Material that blocks the transfer of heat between the air inside and outside of a building Energy Conservation The practice of reducing energy use