GEOG 2050 Chapter : Chapter 1
Document Summary
How do we study geography: spatial analysis- geographers utilize these (spatial analysis) tools to bring together topics from many different fields. System equilibrium: most systems maintain a structure over time, steady-state- a system that remains balanced over time; conditions are constant or recur (fluctuate around a stable average, dynamic- changing trend over time, systems tend to resist change. One may reach a threshold (tipping point), and can no longer maintain its usual character. Representing earth: eratosthenes- librarian of alexandria during 3rd century bc. Latitude: runs east/west (side to side, divides the north and south hemispheres, equator (0 degrees, a line of latitude that cuts the earth into two equal parts. Lat and direction, long and direction: when you see a longitude (negative longitude), that dictates west, degrees minutes seconds. Gps: 24 orbiting satellites in 6 orbital planes, a gps receiver senses signals from three or more satellites and triangulates the receiver"s location.
