Chapter_2_Fall_2010_to post

Chapter_2_Fall_2010_to post - Introduction to Geography...

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1 Introduction to Geography GEOG 103 Chapter 2 What is a map? Representation of the Earth (or other planets, moons, etc.) Human Construction Why not this?
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2 Earth’s Dimensions The Spherical Earth A circle is divided into 360 degrees Each degree is divided into 60 minutes Each minute is divided into 60 seconds Locating Points on a Sphere: The Grid System Latitude Longitude
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3 Latitude Longitude
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4 Hong Kong 22 ° 15’ N, 114 ° 10’ E Columbia, SC 33 ° 57’ 0” N, 81 ° 07’ 12” W Baghdad, Iraq 33° 20’ 00” N, 44 ° 26’ 00” E Maps and Map Projections How do you transform a spherical surface (like the Earth) into a flat surface?
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5 Map Projections Cylindrical Map Projections Planar Map Projections Conic
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6 Properties of Map Projections Area Equal-area or equivalent Shape conformal Distance equidistant Direction azimuthal (a) equal-area sinusoidal, (b) conformal, and (c) equidistant projection Lambert Planar Equal-area Projection
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Chapter_2_Fall_2010_to post - Introduction to Geography...

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