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APHG Unit 8 Sustaina

APHG Unit 8 Sustainability Barrons & Rubenstein

QuestionAnswer
Acid deposition Sulfur oxides and nitrogen oxides, emitted by burning fossil fuels, enter the atmosphere-where they com¬bine with oxygen and water to form sulfuric acid and nitric acid-and return to Earth's surface
Acid precipitation Conversion of sulfur oxides and nitrogen oxides to acids that return to Earth as rain, snow, or fog.
Active solar energy systems Solar energy system that collects energy through the use of mechanical devices like photovoltaic cells or flat-plate collectors.
Air pollution Concentration of trace substances, such as carbon monoxide, sulfur dioxide, nitrogen oxides, hydrocarbons, and solid particulates, at a greater level than occurs in average air.
Animate power Power supplied by people or animals.
Biochemical Oxygen demand (BOD) Amount of oxygen required by aquatic bacteria to decompose a given load of organic waste; a measure of water pollution.
Biodiversity The number of species within a specific habitat. Biomass fuel fuel that derives from plant material and animal waste.
Breeder reactor A nuclear power plant that creates its own fuel from plutonium.
Chorofluorocarbon (CFC) A gas used as a solvent, a propellant in aerosols, a refrigerant, and in plastic foams and fire extinguishers.
Conservation The sustainable use and management of a natural resource, through consuming at a less rapid rate than it can be replaced.
Ferrous Metals including iron ore, that are utilized in the production of iron and steel.
Fission The splitting of an atomic nucleus to release energy.
Fossil fuel Energry source formed from the residue of plants and animals buried millions of years ago.
Fusion Creation of energy by joining the nuclei of two hydrogen atoms to form helium.
Geothermal energy Energy from steam or hot water produced from hot or molten underground rocks.
Greenhouse effect Anticipated increase in Earth's temperature, caused by carbon dioxide (emitted by burning fossil fuels) trapping some of the radiation emitted by the surface.
Hydroelectric power Power generated from moving water. Ideograms The system of writing used in China and other East Asian countries in which each symbol represents an idea or a concept rather than a specific sound, as is the case with letters in English.
Inanimate power Power supplied by machines.
Nonferrous metals utilized to make products other than iron and steel.
Nonrenewable energy A source of energy that is a finite supply capable of being exhausted.
Ozone gas that absorbs ultraviolet solar radiation, found in the stratosphere, a zone between 15 and 50 kilometers (9 to 30 miles) above Earth's surface.
Passive solar energy systems Solar energy system that collects energy without the use of mechanical devices.
Photochemical smog An atmospheric condition formed through a combination of weather conditions and pollution, especially from motor vehicle emissions.
Photovoltaic cell Solar energy cells, usually made from silicon, that collect solar rays to generate electricity.
Pollution Addition of more waste than a resource can accommodate.
Potential reserve The amount of energy in deposits not yet identified but thought to exist.
Preservation Maintenance of a resource in its present condition, with as little human impact as possible.
Proven reserve The amount of a resource remaining in discovered deposits.
Radioactive waste Particles from a nuclear reaction that emit radiation; contact with such particles may be harmful or lethal to people and must therefore be safely stored for thousands of years.
Renewable energy A resource that has a theoretically unlimited supply and is not depleted when used by humans.
Resource A substance in the environment that is useful to people, is economically and technologically feasible to access, and is socially acceptable to use
Sanitary landfill A place to deposit solid waste, where a layer of earth is bulldozed over garbage each day to reduce emissions of gases and odors from the decaying trash, to minimize fires, and to discourage vermin.
Sustainable development The level of development that can be maintained in a country without depleting resources to the extent that future generations will be unable to achieve a comparable level of development.
Ideograms The system of writing used in China and other East Asian countries in which each symbol represents an idea or a concept rather than a specific sound, as is the case with letters in English.
Created by: Chenchen on 2010-04-24



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