| A | B |
|---|
| combustion | the burning of fuel |
| fossil fuel | an energy-rich substance (such as coal, oil, or natural gas) 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 fuels and other products |
| solar energy | energy from the sun |
| passive solar system | method of converting solar energy into heat without pumps and 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 the 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 splitting of an atom’s nucleus into smaller nuclei |
| fuel rods | uranium rod that undergoes fission in a nuclear reactor |
| control rods | cadmium rod used for 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 |
