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Geography 2050 Physical Geography

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Department
Geography
Course
GEOG 2050
Professor
All Professors
Semester
Fall

Description
Geography2050PhysicalGeographyTheAtmosphere08262013KeyConceptsMilkyWayGalaxySolarSystemSpeedofLightGravitySolarSystemFormationInnerPlanetsSunInsolationSolarRadiationEvolutionoftheAtmosphereSolarRadiationFusionSolarWindOriginoftheUniverseUniverseformed13515billionyearsagoBigBangtheoryMilkyWayGalaxyOldestStar136billionyearsDiskformedbetween65101billionyearsagoSpeedoflight300000kmsec186000milessecLightyear6trillionmilesSlide18GravityTheattractiveforcebetweenobjectswithmassResponsibleforFormationofthesolarsystemOrbitsofplanetsThemoonsorbitTidesintheoceanAndmoreSlide19SolarSystemFormationRotatingsolarsystembeginstoformfromdustandgas46billionyearsagoGravitationalforcesHeaviermaterialsclumpnearcentertoforminnermostprotoplanetsLightermaterialscoalescenearperipherytoformouterplanetsEarthformsoutofironnickelmanganeseandsilicatesSlide20TheSunLargemass999ofsolarsystemdiameter1392000km865000mi109Earth74hydrogen25Helium2otherNuclearfusionofhydrogenatomsproduceheliumandreleasingenergySurface5770k9941FCore28millionFSlide21SunsRadiationLightelectromagneticradiation8minutestoreachEarthSolarWindAstreamofelectricallychargedparticlesejectedfromtheSun17hoursto7daystoreachEarththeEarthsmagnetospheredefectsthesolarwindaurorasdisruptsradiobroadcastselectricalsystemsSlide22InnerplanetsMercurynoatmosphere183427degreesCVenusHighCO2atmosphereStronggreenhouse460degreesCEarthAtmosphere
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