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25 Cards in this Set
- Front
- Back
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Parallels
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one set of circles describes positions north and south of the equator
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Latitude
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the angular distance north and south of the equator
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Meridians
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are used to establish east-west locations
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Prime Meridian
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0 degree running north to south
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Longitude
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the angular distance measured in degrees east or west of the prime meridian
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Great Circle
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any circle that divides the earth into even halves
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Geomagnetic Poles
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the points on the earths surface just above the poles of the imaginary magnet
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Magnetic Declination
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the angle between the direction of the geographic pole and the direction in which the coompass needle points
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True North
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the diretion of geographic North
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Cartography
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the art of map making
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Map Projection
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a flat map tha represents the 3-D curved surface of a globe
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Mercator Projection
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if you were to wrap a cylinder of paper around a lighted globe
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Gnomonic Projection
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a sheet of paper touching a lightened globe at only one
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Conic Projection
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a paper cone placed over the top of the earth
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Polyconic Projections
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lots of conic projections together
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Legend
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list of symbols
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Scale
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indicates the relationship between distance as shown on the map and actual distance
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Topographic Map
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shpw surface features
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Topography
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the earth features
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Elevation
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height above sea leval
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Mean Sea Level
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the midway point between the highest and the lowest levels
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Contour Lines
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lines used to show elevation
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Contour Interval
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the difference in elevation one contour line and the next
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Relief
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difference in elevation between the highest and lowest points of the area on the map
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Index Contours
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every fifth line is bolder
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