GEOG 2051 : Geography Exam 1
Document Summary
Introduction: what is geography: earth/ describe, approaches, systematic, regional, man-environment. The earth: shape: oblate spheroid, diameter 7,927 miles, 27 miles shorter thru poles, 72% water, n. hemisphere land, s. hemisphere water, depth. Maps and grid systems: problem: two dimensional surface, map properties, direction/ azimuth, distance, area/relative to each other, shape. Types of projections: planar/plane, conic, cylindrical, math/others. Scale: verbal, one inch= one mile, graphic, 0_____1______2______3, fractional, 1/62,500;1/63,360. Grid system/survey systems: latitude: imaginary line running e-w, measuring angular distance n-s: 0-90 degrees, longitude: imaginary line running n-s measures angular distance e-w 0-180 degrees. *leaps and bounds: original survey system of the first 13 colonies and texas. Changed when we got longitude and latitude: base lines: latitude, principal meridian: longitude. Line on map that connects points of equal elevation: 2. What causes seasons?: rotation of the earths axis, revolution around the sun, tilt of earth on axis. Uniformtarinism: present is the key to the past.
