Envi Sci Exam 3 Notes
Envi Sci Exam 3 Notes ENVI 101
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This 7 page Bundle was uploaded by Abbey Kaufman on Monday November 2, 2015. The Bundle belongs to ENVI 101 at University of South Carolina taught by David M. Kneas in Summer 2015. Since its upload, it has received 58 views. For similar materials see Introduction to the Environment in Earth Sciences at University of South Carolina.
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Date Created: 11/02/15
lO27l5 Envi Sci Nonrenewable l QSOUl CQS l lislory of energy consumplion world growlh in GOD Conlrolled use of fire made wood lhe primary fuel source for cooking and healing and laler melallurgy oil has replaced coal as lhe dominanl source Wood and charcoal remain lhe major energy source for cooking healing elc Converling wood inlo charcoal slack up wood cover wilh dirl leaves sel on lire ldepriving il of oxygen creales hydrocarbon bonds 0 l lamlel and healhens living in inlelleclual spirilual and moral darkness The induslrial revolulion a period of rapid lechnological innovalions beginning in lhe lale l8lh and early lth 0 economy based on manual labor replaced by machineslaclories lVlosl coal al lhis lime used for eleclricily 0 Changed inlo crude oil in pennsylvania in IQSO wilh lhe aulomobile U9 gov policies have kepl energy cosls arlilicially low lo supporl lhe car induslry removing supporl for bus and rail lransporlalion o privale aulomobiles in Norlh America consume over 40 of world gasoline produclion 0 Only l5 of lhe U9 consumplion of oil comes from lhe lVliddle Easl mosl ol il is from lhe US 55 Canada 29 lVlosl major areas lhal show lhe impacls of oil drilling are major cilies nol all l luge rise in energy consumplion aller IQSO Nel energy Energy relurned energy invesled o EROl Energy Relurned on lnveslmenl 0 Energy relurned energy invesled l970 301 Convenlional oil 20l4 lll Convenlional oil Formalion of hydrocarbons during lhe carbonilerous period lswampier condilions were conduclive lo lhe lormalion of large deposils of coal 0 The inlroduclion of oxygen lranslorms chemical bonds releasing energy pelroleum formed in an ocean environmenl while coal is formed in a lerreslrial environmenl olherwise lheir lormalions are similar ll320l5 Environmenfal Science Nuclear fission fission of U235 releases a of of heaf used fo converiL wafer info sfeam o Sfeam fhen drives a furbine generafing elecfricify 0 Nuclear power planfs use confrolled nuclear reacfions Bombs are unconfrolled nuclear reacfions Confrol rods move up and down fo sfarf or 0 slow fhe reacfion o Neufrons are slowed by wafer in fhe reacfor fhe wafer gefs very hof 0 Fuel rods long mefal fubes loaded wifh a small amounf of enriched Uranium pellefs Three Mile lsland lVlarch Chernobyl April l986 0 Full scale nuclear melfdown biggesf 0 3576 fofal deafhs of cial 32000 unofficial 0 Long ferm effecfs sfill being felf 0 High rafes of cancers birfh defecfs Radioacfive wasfe Nuclear power in US and 90 nof fhe besf fhing Renewable energy only 8 of fhe primary energy source in fhe world 0 thanol form of alcohol used for energy one of fhe leasf efficienf sources of energy 0 passive solar daily energy from fhe sun is 600 fimes greafer fhan energy produced each day by all ofher energy sources combined 0 Acfive solar Solar panels heaf up wafer l0l0l5 Chapfer l4 The ozone layer absorbs 99 of harmful UV radiafion Chlorofluorocarbons CFCs are produced by chemical indusfries for use as refrigeranfs solvenfs and propellanfs Ulfraviolef cenfurg l9702070 o lZ million exfra cases of skin cancer 0 Ozone hole size has increased can f be fixed can only be prevenfed from geHing larger 0 lndoor air pollufion surrounded by pofenfial confaminafes in our own living space 0 Radon exposure fo radon in fhe home is responsible for an esfimafed 20000 lung cancer deafhs each year Radon is a healfh hazard wifh a simple solufion Climafe change 0 Yes if s happening 0 Greenhouse effecf make if so fhaf fhe femperafure close fo fhe surface of fhe earfh is warmer fhan if should be Only a small percenfage of gasses in fhe afmosphere lVlilanlltouifch cgcle filf of Earfh s axis seasonallg and exfenf of glacificaifon Carbon dioxide levels graph whaf do you expecf would happen fo global femperafure if carbon dioxide decreased from 280 ppm fo l90 ppm 8 carbon decreases so does femperafure public consciousness on climafe change oil companies being invesfigafed for misleading fhe public abouf fhe impacfs on fhe enuironmenf China is largesf emiHer of greenhouse gasses Tellfale signs of global warming climafe change over fime lllZZOIS Climale change chaper l4 conl Carbon dioxide levels uciuaie in ihe almosphere Many people deny climaie change in sociey 0 Trend for parenis noi lo vaccinaie iheir children due lo rumors aboui ihe vaccines Sea levels sieadily rising 0 Gulf coasi is ai greaier risk during sea level rise 0 popular images of polar bears on ice ihe arcic isn i ihe only place affecied by rising sea levels 0 Underlying sense of disiance people don l know whaiL iheir role is in climaie changewhaiL exacily ihey re being asked lo do 0 li s hard lo imagine ihe lime in beiween now and ihe end of ihe world ihere are a loi of movies aboui ihe apocalypse bu noi ihe environmenial impacis ha will happen in ihe fuiure 0 Reducing your carbon foolprini becomes an issue bu here are also oiher ways ha we can help lll7l5 Freshwafer o Essenfial for all life pofable wafer is suifable for drinking 0 The World l lealfh Organizafion 25 of fhe world s populafion does nof have access fo safe drinking wafer 0 UN Enuironmenf program befuueen 5lO million deafhs each year due fo confaminafed wafer 0 Surface 0 Crounduuafer lVlosf wafer is seawafer 97 freshwafer 25 l lgdrological Cgcle Anfarcfica oceans glaciers seasonal snow cover soil moisfure groundwafer shallow deep lakes rivers afmosphere Global wafer use agriculfure fakes up fhe biggesf amounf fhen indusfrial fhen municipal lsmall amounf US has plenfg of fresh wafer buf nof always in fhe Righf place af fhe righf fime Surface wafer all ponds lakes sfreams rivers and ofher wafers on fhe surface of fhe earfh o Comes from surface runoff seepage from surrounding soil and groundwafer l luman impacfs on l lgdrological cycle 0 Clearing uegefafion from land for agriculfure roads and parking lofs Resulfs in lncreased runoff Reduced infilfrafion o Compounding fhe problem is fhe creafion of impervious surfaces asphalf concrefe and ofher subsfances fhaf prohibif infilfrafion of wafer info fhe soil Agriculfure and wafer 0 ln Norfh America groundwafer is abouf 37 of wafer used in agriculfure and surface wafer accounfs for abouf 63 o lrrigafion is fhe major consumpfive use of wafer in mosf parfs of fhe world Ogallala Aquifer o lnualuable nafural resource because ifs cleaner fhan mosf surface wafer sources 0 Dependable low euaporafion liHle seasonal fluxuafion economical Agriculfure and wafer pollufion poini sources end of ihe pipe discharges faciories sewage ireaimeni planis mines oil wells oil iankers Nonpoini sources area discharges acid deposiiion subsiances picked up in runoff seepage info groundwaier
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