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29 Cards in this Set
- Front
- Back
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anaerobic digestion
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the conversion of biodegradable waste matter into compost in the absence of oxygen
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barrage
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an artificial obstruction in a watercourse to increase the depth of the water, facilitate irrigation, etc.
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bioconversion
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the conversion of biomass to usable energy, as by burning solid fuel for heat, by fermenting plant matter to produce liquid fuel, as ethanol, or by the bacterial decomposition of organic waste to produce methane
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biomass
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organic matter, especially plant matter, that can be converted to fuel and is therefore regarded as a potential energy source
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creosote
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an oily liquid having a burning taste and a penetrating odor, obtained by the distillation of coal and wood tar, used mainly as a preservative for wood and as an antiseptic
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electrolysis
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the passage of an electric current through an electrolyte with subsequent migration of positively and negatively charged ions to the negative and positive electrodes
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ethanol
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the technical name for alcohol
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fermentation
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change brought about by a ferment, as yeast enzymes, which convert grape sugar into ethyl alcohol
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fish lift
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provides a sort of elevator to carry fish over a barrier
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gasohol
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a mixture of gasoline and ethyl alcohol, generally containing no more than 10 percent alcohol, used as an alternative fuel for some automobiles
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geothermal energy
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form of energy obtained from within the earth, originating in its core
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heat pump
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a device that uses a compressible refrigerant to transfer heat from one body, as the ground, air, or water, to another body, as a building, with the process being reversible
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hydroelectric energy
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the term referring to electricity generated by hydropower
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hydrogen
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a colorless, odorless, flammable gas that combines chemically with oxygen to form water: the lightest of the known elements
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hydrogen sulfide gas
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sour smelling natural gas with a high percentage hydrogen sulfur content
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magma
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molten material beneath or within the earth's crust, from which igneous rock is formed
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mantle
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a chemically prepared, incombustible network hood for a gas jet, kerosene wick, etc., that, when the jet or wick is lighted, becomes incandescent and gives off a brilliant light
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methane digester
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anaerobic (low or no oxygen) chambers which facilitate the breakdown of manure by anaerobic bacteria with the release of methane and other gases as a byproduct of their metabolism, including ammonia, nitrogen, hydrogen sulfide, and sulfur dioxide
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methanol
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methyl alcohol
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methyl alcohol
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a colorless, volatile, water-soluble, poisonous liquid, CH 4 O, obtained by the destructive distillation of wood or the incomplete oxidation of natural gas, or produced synthetically from carbon monoxide and hydrogen, used chiefly as a solvent, a fuel, and an automobile antifreeze and in the synthesis of formaldehyde
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nacelle
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the enclosed part of an airplane, dirigible, etc., in which the engine is housed or in which cargo or passengers are carried
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overshot waterwheel
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a machine for converting the energy of free-flowing or falling water into useful forms of power
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penstock
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a pipe conducting water from a head gate to a waterwheel
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pyrolysis
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the subjection of organic compounds to very high temperatures
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tidal fence
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of, pertaining to, characterized by, or subject to tides
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undershot waterwheel
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a machine for converting the energy of free-flowing or falling water into useful forms of power
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waste-to-energy plant
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the process of creating energy in the form of electricity or heat from the incineration of waste source
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wind turbine
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a turbine powered by the wind
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wind velocity profile
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the speed of wind, the movement of air or other gases in an atmosphere
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