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GEOG Notes Test1

GEOG Notes Test1 - GEOG 2051 Geo = earth What is...

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1/20/12 GEOG 2051 Geo = earth What is geography? *Systematic -> study of an item *Regional -> study of different regions *Man-environment -> how man has influenced the landscape The Earth *Oblate spheroid 7927 miles diameter *27 miles shorter through poles *72% water *N. Hemisphere -> Land | S. Hemisphere -> water *Depths home state mine -> 6800 miles *Mantle -> Density 3.3 (water -> 1) *Crust -> Density 2.7 (floats on mantle) 1/23/12 GEOG 2051 Map and grid systems Problem: Two-dimensional surface Map Properties: a. Direction/azimuth: with bearing or with azimuth b. Distance c. Area, relative to each other (cannot be shown accurately) d. Shape (cannot be shown accurately) Types of projections: (know the first 3) (get pictures) a. Planar/plane b. Conic
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c. Cylindrical (most popular) (one of most famous = Mercator projection) Used often as a navigation map because it shows direction accurately. d. Math/others At tangent lines, maps are accurate. Maps are often distorted. Scale Verbal *one inch = one mile Graphic *0_______1________2________3 Fractional *1/62,500; 1/63360 Small scale vs. large scale *1/250,000
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