02 - EarthSunRelation_Season

02 - EarthSunRelation_Season - 1 Landform Geography Earth...

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Unformatted text preview: 1 Landform Geography: Earth ‐ Sun Relationships and Seasons Lecture 2: 12 January Lecture outline: 1. The Geographic Grid 2. Earth-Sun Relations It is important to know where you are located …exactly! 1. The Geographic Grid http://visibleearth.nasa.gov 33 ° 59’ 46’’ N 81 ° 01’ 35’’ W These values are based upon the Earth’s geographic grid 1. The Geographic Grid Great and Small Circles 1. The Geographic Grid Great Circles: ‐‐ Must bisect the Earth ‐‐ Every one is the circumference ‐‐ Both ‘rules’ assume the Earth is a perfect sphere Figure 1.11 2 1. The Geographic Grid The Equator is a Great Circle Great and Small Circles Figure 1.10 Great and Small Circles 1. The Geographic Grid Great Circles: ‐‐ Must bisect the Earth ‐‐ Every one is the circumference ‐‐ Both ‘rules’ assume the Earth is a perfect sphere Figure 1.11 Small Circles: ‐‐ Drawn around Earth ‐‐ Do NOT intersect the Earth’s center (Equator) Geographic Grid: Latitude and Longitude 1. The Geographic Grid Latitude Note: You will learn Universal Transverse Mercator (UTM) and Public Land Survey System (PLSS) in Lab 1 Longitude Latitude and Longitude Latitude • Degree, minute, second ‐‐‐ ° ‐‐ ’ ‐‐ ’’ D 1. The Geographic Grid Longitude • Degree, minute, second ‐‐‐ ° ‐‐ ’ ‐‐ ’’ D ˚ to 90 ˚ N, S 00’’ to 59’’ 00’ to 59’ ˚ to 180 ˚ E, W 00’’ to 59’’ 00’ to 59’ 3 Latitude • Angular distance...
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This note was uploaded on 02/17/2011 for the course GEOL 201 taught by Professor Baruah during the Spring '10 term at South Carolina.

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02 - EarthSunRelation_Season - 1 Landform Geography Earth...

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