Term
What is the most used source of energy in the Us |
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Definition
crued oil: to make gasoline for cars and trucks |
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Term
Prior to the 1950s what was the most used source of energy in the US |
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Definition
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what is the most abundant fossil fuel in the US |
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Definition
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what is the primary enrgy source for the production of electricity |
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Definition
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name the 3 most commonly used fossil fuels |
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Definition
crude oil (petroleum) coal natural gas |
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Term
describe the occupational and environmental effects of coal extraction |
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Definition
both methods damage the enviornment deep mining is more dangerous for the worker |
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Term
what is black lung disease |
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Definition
is the common name for coal workers CWP or anthracnose a lung disease of older workers in the coal industry |
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Term
be able to match energy sources with primary uses |
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Definition
oil: transportaion and industry Natural Gas: industry, residental, commercial Coal: electric power Others(nuclears and renewables): electrical power |
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Term
what is the net energy yield of coal |
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Definition
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Term
what are the pollution credits what are their advantages and limitations |
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Definition
credits: an industry is allowed to pollute a certain amount vased on past performance advantages and limitations: if they produce less than the stated amount of pollution they get a credit that can be sold to another company |
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Term
describe Us oil production and consumption over time |
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Definition
we use the most oil i the world the cost of crude oil is increasing because until recently the oil cost about the same as 2000 as in 1975 when adjusted for inflation major oil reserves: saudi arabia 25.5% |
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Term
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Definition
Artic National Wildlife Refuge proponents believe there are huge quantities of oil located in this protected area opponents estimate there is no more than six months supply of oil at current consukptio rates and that it will take 7-10 years to develop the fields their biggest concer that development of these fields will destrpy a fragile habitat |
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Term
what are issues with other fossil fuel sources like shale oil and tar sands |
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Definition
a lot of them but to get them out you need to strip a lot of land to get them you can make money |
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Term
how much energy in the US is wasted |
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Definition
84% of all commercial nergy in the US is wasted people in the IS waste as much energy as 2/3 of the worlds population consumes the answer: energy efficiency |
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Term
what are some examples of ways we can increase energy efficiency |
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Definition
energy efficient homes water heaters air conditioners refrigerators and heating systems |
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Term
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Definition
initial cost to buy the appliance plus the life time operating costs of an item or appliance important to consider: if we father in life cycle cose were saving money |
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Term
are high levels of energy use necessary to maintain a high standard of living |
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Definition
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Term
what are some ways the energy efficiency could be increased in industry |
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Definition
replacing energy- wasting electric motors switch to high efficiency lighting-florescent lights recycling and reuse run high energy consuming tasks during low customer demand hours replacing old motors demand management |
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Term
what are some examples of energy efficiency improvements in buildings |
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Definition
straw bale houses double pane windows better insulation plugging leaks and repairing cracks |
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Term
what is demand management |
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Definition
give customers cash rebates for buyng energy efficient lights and appliances provide savings to a customers who reduce the use of energy utilities offer reduced rates for allowing the power to be turned off for a specific length of time |
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Term
what are ways of balancing energy uses and demand |
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Definition
conservation efficiency demand management |
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Term
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Definition
large complexes are built with their own power generation equipment to make electricity. this is more efficient in two ways 1. there is no need to transmit the energy over great distances 2. the waste heat created from making the electricity may be captured for use in heating the buildings when needed |
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Term
which source of human made radiation typically? contributes more exposure nuclear power nuclear waste medical dental x rays |
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Definition
medical practices dental x rays more common for us |
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Term
why is radiation used in medicine |
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Definition
to find and fight diseases mammograms x rays use to kill cancer radiation induced cancer-association with low level exposure lukemia is an example for radiation induced malingnancy |
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Term
what is ionizing radiation |
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Definition
energetic forms of radiation forms of ionizing radiation: aplpha particlees-helium nucleus beta particles-electron gamma rays(photons) xrays |
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Term
what are some health effects of ionizing radiation |
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Definition
radiation induced mutations radiation and birth defects radiation induced cancer |
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Term
what happened at chernobyl and 3mile island power plants |
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Definition
chernobyl: locating in Ukraine in 1986 reactor lost coolant had a complete melt down resulting in a series of massive explosions estimates of deaths vary from 3576 to about 3200 400,000 were permanetly evacuated 3mile: located near harrisbug PA in 1979 suffered a partial melt down of its core when coolant was lost due to mechanical failures and human errors amount of radiation released is unknown 100,000 people evacuated |
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Term
explain the difference between nuclear fission and nuclear fusion |
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Definition
nuclear fission occurs when an unstable element such as U235 splits apart, releasing free neutrons and by products (heat) nuclear fusion occurs when elements such as hydrogen are forced to join together and form a new element such as helium. this provess also generates free neutrons and heat but no other by products |
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Term
which one is used to make nuclear pwer |
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Definition
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Term
describe what happens in a chain reaction |
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Definition
when a U235 atom disintegrates it releases free neutrons these free neutrons may stike other U235 atoms causing them to disintergrate |
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Term
compare the enviornmental and health effects of nuclear energy compared to coal |
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Definition
both sources must be mined processes and transported nuclear power plants do not emit air pollutants so long as they are operating properly more attractive then fossil fuels for reducing the threat of global warming but disruption of land and water pollution are concerns from uranium mining damage and tailings and thermal poolution of water systems |
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Term
what is nuclear reprocessing |
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Definition
waste fission products accumulate in rods these spent rods are removed and replaced with fresh rods spent fuel rods are highly radioactive and are initially stored in swimming pool like cooling tanks before reprocessing of the spent rod occurs france and the united kingdom reprocess spent fuel from commercial nuclear reactors |
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Term
how do we deal with nuclear waste in the us |
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Definition
storing want to put it in the mt. yucca in nevada no nuclear reprocessing in the us too radioactive |
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Term
how is solar energy created in the sun |
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Definition
originates from thermonuclear fusion reactisn occurring in the sun |
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Term
what are some solar energy uses |
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Definition
hot water heating solar space heating space and hot water heating producing electrical power |
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Term
explain the difference between active solar collections and passive solar heating |
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Definition
active- pumped involved. heating absorbed fluid. need a collector when sun shines on tubes of water or air passive- using natural material structures with no moving aprts to simply gather and hold heat |
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Term
describe the role of solar power in the us energy picture |
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Definition
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Term
if back up is required how might this be done |
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Definition
stay connected to the grid |
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Term
what are solar cells also called photovoltaic ells and are the cost effective |
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Definition
they are cells with a thin wafer of material with wires on top and on the bottom as the sunlight strikes the cells electrical current is created if you have enough of these cells linked together you can use it to power calculators watches pumps traffic singlas lighthouses even your home |
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Term
what are some other forms of power |
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Definition
hyrdopower wind power fuel cells ocean thermal energy converter geothermal energy tidal power |
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Term
what are 2 ways of using geothermal energy |
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Definition
direct use- heating unit that has coils that go down in the earth and heats from under using hot springs to heat building or drive turbogenerators guser- drill pipe and capture the steam 50-70% effecient |
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Term
what does bioconversion mean |
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Definition
burning firewood burning municipal waste producing methane producing alchol as a fuel |
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Term
what is an enviornmental world view |
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Definition
how people think the world works what their role hsould be what they think is right or wrong behavior regarding the enviornment |
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Term
what are examples of individual world views |
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Definition
no problem school: science can fix anything free market school: government is bad and buisness industry is all that matters responsible planetary management: it is our best interest to manage resources wisely the stewarship school: an ethical responsility to care for the world |
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Term
what is an earth centered worldview |
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Definition
stresses the intrinsic value of other species stresses the importance of sustainability |
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Term
what is the effect of political world views on the enforcement of enviornmental laws |
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Definition
politics as a power gorups work together to establish plicies of self interests free market world view |
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Term
how does our lifestyle affect sustainability |
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Definition
rational choice eastablishing policy that has the greatest culmulative benefit and least negative impact |
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Term
list the major enviormental impacts of urban sprawl |
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Definition
depletion of natural land air pollution water pollution and degradation of water resources loss of landscapees and wildlife loss of agricultural land airport noise |
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Term
what federal law had the greatest effect on creating of urban sprawl |
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Definition
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Term
has construction of ne highways reduced the average communte time |
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Definition
the average commuting distance has soubled since 1960 but the average commuting time has remined about the same until you reach the city then everything slows down |
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Term
explain the difference between clustered and detached housing development |
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Definition
instead of conventional detached homes cluster home are higher in density larger amounts of wild space is left intact saves the city and county money in utilities construction trash pickup snow removal |
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Term
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Definition
building construction uses significant amounts of natural resouces inefficient buildings waste significant amounts of energy demolition of buildings containing hazardous materials presents a significant hazard to workers and the enviornment |
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Term
why is pollution prevention more cost effective than pollution clean up |
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Definition
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Term
describe the shape of the curbe of the cost for removal of pollutants |
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Definition
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Term
what is enviornmental justice give an example of envioronmental racism |
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Definition
justice has to do with distribution of things: good things- jobs education goods and services bad things- toxic and hazardous wates **people of color and other thnic groups ar emore likely to suffer negative ffects from environmental hazards |
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Term
what is the precautionary principle how is this different from risk analysis |
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Definition
assume the chemical is dangerous until proben otherwise because of chronic diseases 20 yrs to figure out different from risk anlysis by: risk analysis is an evaluation of the short term and long term risks associated with the particular activity or hazard usually compared with benefits in a cost benefit analysis |
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Term
what are some ways that an individual can affect society |
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Definition
individual lifestyle change political involvement membership and participation in non governmental organziations career choices while the number of jobs are increasing the number of students entering envronmental majors is decreasing |
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Term
what are some individual lifestyle changes that can improve the environment |
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Definition
switch to more fuel efficient car recycling paper cans and bottles backyard garden coposting recycling recycling food and garden wastes into your soil live closer to your workplace-live in a cluster development |
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Term
how will political involvement help |
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Definition
1. write letter 2. phone call 3. email make it known you care about the enviornment vote for someone who reflects your position |
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Term
what are non profit enviornmental organizations give examples |
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Definition
Audobahn society-birds Ecology Action Center- edu about the enviornment greenways project- old railways turned into walking trails (constitution trail) peace corps |
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Term
define the terms sustainable society and environmental stewardship |
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Definition
sustainable- a society the functions in a way so as not to deplete energy or material resources on which it depends stewardship- active care and conern for nature and the environment thru: ecosystem sustainability pollution prevention wise stewarship |
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Term
where will the us storage site for nuclear waste be located |
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Definition
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