GEOG 2051 Exam1

# GEOG 2051 Exam1 - GEOG 2051 Exam1 Introduction What is...

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GEOG 2051 Exam1 15:49 Introduction What is geography: earth/describe Approaches Systematic Regional Man-environment Region  Arbitrary, homogenous, character Has core The Earth Shape: oblate spheroid Diameter: 7927 miles 27  miles shorter through poles 72% water N. hemi. Land S. hemi water Depths: Homestake mine S.D. 6,800 ft. oil wells 25,000 Crust density- 2.7 Mantle density- 3.3 Density- how its compacted; density of 1 is water;

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Something lighter floats on something heavier crust floats on mantle Maps and Grid System 1/23 Maps and Grid systems Problem: two dimensional surface  Map Properties Direction/ azimuth- type of direction used in military Distance- between point a and point b Area/relative to each other – on same map Shape ** shape and area cannot be shown ACCURATELY on the same map** Types of projections Planar/ Plane Conic Cylindrical-  usually most popular Mercator projection ; used as navigation but it has a big problem Greenland- is distorted: bigger than S. America on map Actually 1/10 th  its size than on map; area is wrong  Math/ other
**Know First 3** Scale  Verbal One inch= one mile Graphic 0_______1_______2_______3 Fractional 1/62,500;  actually 1/63360   : 1 inch to a mile51 Cartographers cheat Have arbitrary rule Small scale vs. large scale  1/250,000 What would 1 inch = 4 miles be? Written scale

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## This note was uploaded on 02/27/2012 for the course GEOG 2051 taught by Professor James during the Spring '07 term at LSU.

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GEOG 2051 Exam1 - GEOG 2051 Exam1 Introduction What is...

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