Lecture 3 a_ Global Grid.pdf - 1/29/2022 The Geographic...

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1/29/20221Geography 2300Introducing Physical GeographyLecture 3aGlobal Grid SystemThe Geographic GridA net of intersecting Latitudes andLongitudes on a map produces aGeographic Grid,also called aReference Grid or Graticule.The Geographic Grid is used toidentifyspecific locations(absolutelocations) on the earth’s surface.The GRID SystemLONGITUDES:are lines drawn on maps toconnect the North and South Poles.Longitudes are also calledMeridians.Some Important Meridians include:The Prime Meridian =Longitude 0oalso called Greenwich MeridianInternational Date Line= Longitude 180oLongitudesLongitudesEach meridian ishalf of a great circle.Meridiansruninatruenorth-southdirection.They are spacedfarthest apart at theequatorbut converges at thepoles.Meridians can be used to determinestandard timeat every place on the earth.LatitudesLATITUDESarelinesdrawnonmapsstretchingNorth - SouthLatitudes are also calledParallels.

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Term
Fall
Professor
Ken Foote
Tags
Equator, great circle

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