| A | B |
|---|
| combustion | The burning of a fuel. |
| fossil fuels | An energy-rich substance formed from the remains of organisms. |
| hydrocarbons | A compound that contains carbon and hydrogen atoms. |
| reserves | A known deposit of fuels. |
| petroleum | Liquid fossil fuel; oil. |
| refinery | A factory where crude oil is separated into fuel and other products. |
| petrochemicals | Compound made from oil. |
| solar energy | Energy from the sun. |
| passive solar system | A method of converting solar energy into heat without pumps or fans. |
| active solar system | A method of capturing the sun's energy and distributing it using pumps and fans. |
| hydroelectric power | Electricity produced using the energy of flowing water. |
| biomass fuels | Fuel made from living things. |
| gasohol | A mixture of gasoline and alcohol. |
| geothermal energy | Heat from Earth's interior. |
| nucleus | The central core of an atom that contains the protons and neutrons. |
| nuclear fission | The splitting of an atom's nucleus into smaller nuclei. |
| reactor vessel | The part of a nuclear reactor where nuclear fission occurs. |
| fuel rods | Uranium rod that undergoes fission in a nuclear reactor. |
| control rods | Cadmium rod used in a nuclear reactor to absorb neutrons from fission. |
| meltdown | A dangerous condition caused by overheating inside a nuclear reactor. |
| nuclear fusion | The combining of two atomic nuclei into a single larger nucleus. |
| energy conservation | The practice of reducing energy use. |
| efficiency | The percentage of energy that is used by a device to perform work. |
| insulation | Building material that blocks heat transfer between the air inside and outside. |
