0c5a8ab569251ba8d2f8a0959cc5fa55

0c5a8ab569251ba8d2f8a0959cc5fa55 - Geography 2050

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Geography Notes 17:39 Key Concepts: Geography Systems Science  GPS: Global Positioning System GIS: Geography Informational Science Hurricane Tracking Weather maps Geography     : [geo=earth] [graphein=to write] The study the interdependence among geography areas, natural systems, people  and their activities over space A spatial science USE MAPS!  Geography is a holistic science Human geography: explores human interactions spatially  Behavioral, economic, political, demography, economics, political science, etc. Physical geography: environmental interactions Astronomy, biology, etc.
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Scientific Method System Science: atmosphere and hydrosphere   Key concepts Open/closed systems Feedback systems Equilibrium  Geodesy Latitude and longitude Great circles Time zones Types of maps Map scale Remote sensing GPS GIS Systems Theory : Flow of Energy How the energy systems on Earth work. 
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Energy source: sun Travels from the sun to the earth Distributed in many ways Heats ocean and land Evaporation occurs and temperatures change Condensation then occurs Constant circulation of energy.  Open/Closed system Open: energy comes and out An exchange of energy with surroundings Equilibrium: input=output. The Earth is an open system.  Must have equilibrium to live.  Closed: no exchange of energy with surroundings.  Equilibrium and Time Scales   Figure 1.5 Steady state: vary around an average.  State through short time: pretty much constant average.  State through long time: bounce around more but still have an average.  Feedback Systems Something that has a force that occurs and the system has a feedback Positive: response amplified by climate system Ex:  increase temperature More water vapor enhances greenhouse  effect Increase temperature. 
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Negative: response reduced by climate system.  Counter acts the force Ex: increase temperature increase number of clouds  decrease temperature.  Positive feedback is not always a good thing.  Climate would change too much if  we did not have negative feedback as well. Is not good vs bad. Geodesy:  Figure 1.9 The study of the shape of the earth.  Mean sea level surface- Geoid  Earth rotates which makes it bulge at the equator. Latitude:  Lines that run east-west parallel lines called Parallels degrees North-South (0-90 degrees N,S) 1 degree latitude= 69 miles Important Parallels Equator (only parallel that is a Great Circle) 0 Tropic of Cancer 23.5 N Tropic of Capricorn 23.5 S Arctic Circle 66.5 N Antarctic Circle 66.5 S Longitude
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Lines that run north-south Meridians Degrees East-West 180 degrees E-W Meridians converge at the poles- not parallel pairs of meridians are Great Circles
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This note was uploaded on 05/03/2011 for the course GEOG 2050 taught by Professor Brown during the Spring '07 term at LSU.

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0c5a8ab569251ba8d2f8a0959cc5fa55 - Geography 2050

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