GEOG 2051 Chapter : Geography 2051
Document Summary
Region: arbitrary, homogeneous character, sphere of influence. The earth: shape: oblate spheroid, diamerter 7927 miles, 27 miles shorter through poles, 72% water, n. hemisphere land, s. hemisphere water, depths: homestake mine s. d. All based on water, water is 1, heavier and denser than water. Maps and grid systems: problem: two dimensional surface map properties, direction/azimuth, distance, area/relative to each other, shape. Types of projections: planar/plane most accurate part in the center, where it touches, conic , cylindrical most widely used projection, mercator projection , math/others. Scale: verbal, one inch = one mile, graphic, 0______!______2________3 fractional, 1/62,500; 1/63360, small scale vs large scale, 1/250,000. 1 in = one mile =32 square miles (4)(8) 1 in = two miles =128 square miles (16)(32) 1 in = four miles =512 square miles. Metes and bounds survey: 1st 13 states, physical things in the landscape that marked the boundaries. Grid system: latitude- imaginary line running e- w, measuring angular distance.
