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| 285115213 | active solar heating | the gathering of solar energy by collectors to heat up water or a building | |
| 285115214 | anthracite | a coal that burns with very little smoke or flame; hard coal. it consists almost entirely of carbon | |
| 285115215 | alpha particle | a positively charged particle that is the nucleus of the helium atom with two protons and two neutrons | |
| 285115216 | atomic mass number | the total number of protons and neutrons in an atom's nucleus | |
| 285115217 | atomic number | the number of protons in the nucleus of an atom | |
| 285115218 | biogas | a mixture of gases that can be burned directly or converted to gas or liquid fuels | |
| 285115219 | biomass | the total mass of living matter in a given unit area | |
| 285115220 | bituminous coal | soft coal; third stage in the development of coal and is most common type of coal | |
| 285115221 | breeder nuclear fission reactor | nuclear fission reactor that produces more nuclear fuel than it consumes by converting nonfissionable uranium-238 into fissionable plutonium-239. | |
| 285115222 | british thermal unit (BTU) | a unit of energy frequently used in engineering, equivalent to 252 calories or 1.054 kj, unit used to measure the heat released by burning coal | |
| 285115223 | calorie | unit of heat defined as the quantity of heat required to raise the temperature of 1 gram of water by 1 degree centigrade at atmospheric pressure | |
| 285115224 | cogeneration | using waste heat to make electricity | |
| 285115225 | energy efficiency | the percentage of energy put into a system that does useful work | |
| 285115226 | first-law efficiency | amount of energy needed over amount supplied | |
| 285115227 | law of conservation of energy/thermodynamics | energy is neither created nor destroyed but can be changed from form to form | |
| 285115228 | fission | a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy | |
| 285115229 | fusion | a nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy | |
| 285115230 | geothermal energy | energy derived from the heat in the interior of the earth | |
| 285115231 | high-quality energy | organized & concentrated; can perform useful work (fossil fuel, nuclear, high temperature heat, and the energy in electricity, coal, oil, gasoline, sunlight, and the nuclei of uranium-235) | |
| 285115232 | high-throughput society | attempt to boost economic growth by increasing the flow of matter and energy resources extracted from the environment through their economic systems to produce goods and services. | |
| 285115233 | joule | a unit of electrical energy equal to the work done when a current of one ampere passes through a resistance of one ohm for one second; a unit of work equal to one newton-meter | |
| 285115234 | kilocalorie | a unit of heat equal to the amount of heat required to raise the temperature of one kilogram of water by one degree at one atmosphere pressure | |
| 285115235 | kilowatt | a unit of power equal to 1000 watts | |
| 285115236 | lignite | a soft brown rock; 2nd stage of coal formation | |
| 285115237 | low-throughput society | economy based on working with nature by recycling and reusing discarded matter, preventing pollution, conserving matter and energy resources by reducing unnecessary waste and use, not degrading renewable resources, building things that are easy to recycle, reuse, and repair, not allowing population size to exceed the carrying capacity of the environment, and preserving biodiversity. | |
| 285115238 | methane | colorless, odorless, flammable gas present in natural gas and formed by the decomposition of plant matter, one carbon | |
| 285115239 | passive solar heating system | system that captures sunlight directly within a structurea and converts it into low-temperature heat for space or water heating for domestic use | |
| 285115240 | second-law efficiency | minimum amount of work neccessary to perform the task | |
| 285115241 | second law of thermodynamics | states that with each successive energy transfer or transformation in a system, less energy is available to do work | |
| 285115242 | third law of thermodynamics | absolute zero cannot be reached | |
| 285115243 | watt | a unit of power equal to 1 joule per second |
