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Test 1 Notes

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Louisiana State University
GEOG 2050

GEOG 2050 test 1 notesJan 1820Key concepts openclosed systems feedback systems equilibrium equatorial tropics subtropical midlatitude subarctic arctic Antarctic geodesy latitudelongitude great circles time zones types of maps map scaleRemote sensing GPS GISGEOGRAPHYgeoearthgrapheinto write The study the interdependence among geographic areas natural systems people and their activities over spacea spatial science Geographers use mapsGeography is a holistic sciencehuman geography explores human interactions spatially Physical geography includes basic sciences and environmental interactionsSystem scienceenergy reacts with materials on earth spheres FIGURE 18focus on top halfSystems theory flow of energyFIGURE ON MOODLE Open systemsan exchange of energy with surroundings EX EARTH w SUN Closed systemsNo exchange if energy with surroundingsmaterials recycles EX EARTH w MATERIALSEquilibrium inputoutputEquilibriumtime if something is at a steady state then its varying around an average shifting states but still varies around an average FIGURE 15also look at Ice agestoday we are in a steady state1Feedback SystemsiPositive Forcing initial climate changeinitial climate response response is amplified by the climate system1EX Increase temperaturemore water vaporenhances greenhouse effectincrease temperatureiiNegative Initial climate forcinginitial climate responseresponse reduced by climate system1Increase temperatureincrease number of cloudsdecrease temperatureGeodesythe study of the shape of the earth FIGURE 19Equator12756 km From polepole12714 km1LatitudeiLines that run eastwest parallel lines called ParallelsiiDegrees NorthSouth 090 NSiiiEquatorat 0 degrees only parallel that is a great circleivTropic of Cancer235 degrees NvTropic of Capricorn235 degrees SviArctic Circle665 degrees NviiAntarctic Circle665 degrees S2LongitudeiLines that run northsouth called meridiansiiDegrees EastWest 180iiiMeridians converge at the polesthey are NOT parallelivPairs of meridians are Great CirclesvPrime Meridian0 degrees or GreenwichviAntemeridian180 degrees or International Date Line the international date line is kind of a raged shape because some countries want to be on different days3Latitudinal geographic zones FIGURE 112VERY IMPORTANTiTropicseverything between Tropic of Cancer and Tropic of Capricorn1Equatorial region is within the tropics about 5degrees S to 5 degrees NiiSubtropics23535 degrees N and 23535 degrees S we live hereiiiMidlatitudes3555 degrees N and 3555 degrees S most of the worlds population lives hereivSubarctic subpolar5565 degrees N and 5565 degrees SvArctic66590 degrees N and Antarctic 66590 degrees S4DistanceBE SURE YOU UNDERSTAND THIS FOR EXAMSiFIGURE 12ii1 degree latitude111 km69 milesiii1 degree longitude1At north pole0 km0 miles2At 40 degrees85 km53 miles3At equator111 km69 milesivEX if you travel from the equator to 10 degrees N about how far did you travel1111km x 10degrees 1110 km
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