If we dropoil we need to replace it by other things The oil crunch How dowe get

If we dropoil we need to replace it by other things

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If we dropoil we need to replace it by other thingsThe oil crunchHow dowe get people to use energy in a way that solar and windcould becomereliableHow doyou deal with the politics of all thisEnergy Choices, Energy Problemsfind more resources at oneclass.comfind more resources at oneclass.com
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Special Lecture: Sea Level ChangeVery complete slides withimportant diagrams**Parts of Ch.18 & 19Thermal expansionIce sheets meltingCauses:Tide gauge sites: aroundmost populatedshorelinesFirst half of 20thcentury:0.8mm/yrSecond half of 20thcentury: ~2mm/yrContinuingto rise since industrial revolutionTide gauge recordTime required for wavesto bounce off ocean surface and come back to satelliteindicates sea levelSatellite altimetry record:Greenland: 7mAntarctic: 57mIce sheets:Global warmingis factCorrelated to CO2 in atmosphereAir got cold for a while, butover last few decades, temperatures are higher thanthey've been in the last 2000 yearsAmplified at the poles§Continuedrise in temperatureUnstableparts of ice sheets could retreat very rapidly once a certainthreshold is reachedWhat is to come?Human Impacton the Earth Systemfind more resources at oneclass.comfind more resources at oneclass.com
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Would lead tohuge sea level rise§threshold is reachedfind more resources at oneclass.comfind more resources at oneclass.com
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Guest Lecture: The History of the Earth (PeterDouglas, Ch. 11)Uniformitarianism:the same natural laws andprocesses apply todayas in thepastCatastrophism:we also know that there were crazy events that we have noanalogue for that we have totake into accountHow dowe know what happenedin the past?Lots of small particles smashinginto each other and creating larger andlarger bodiesHadean/hell onEarth§Lots of heat/energy in it: big ball of magmaHeavy bombardment10 - formationof the EarthOne idea is that life came from another planetEventually surface of Earth became cool enoughto allowcondensationand the formationof bodies of water§Allowsfor the creation of organic molecules (atmosphere) whichare the building blocks forlife§Other idea forwhere life got its startOver passed 10-15 yearsmayhave become best modelDeep sea vents:enough energy from heat of eruptions that chemo-autotrophstosurvive§Main idea: early Earth had lots of volcanosthat spilled out gas9 - the origin of lifeKey part of Earth's geologyEarth is fairly unique forhaving thisMaybe needed to maintain complex life8 - beginningsof plate tectonicsTop 10 momentsin Earth historyfind more resources at oneclass.comfind more resources at oneclass.com
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Maybe needed to maintain complex lifeEarly Earth basically onlyhad oceanic crustVolcanic eruptions led to the creation of land masses withdifferentdensitiesFor multi-cellular life, oxygen is essentialKey player in creation: algaeToday whenwe have iron coming out of the ocean, theybecome oxygenated and deposit right where they are formed(iron oxide)
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