Topographic Map Symbols - DOC by benbenzhou


									             Unit 4_Geography_A. Atlas Skills_5. Topographical Symbols_

MATERIALS: 1:100 000 Kelowna map sheet, Oxford Atlas 4th edition/

OBJECTIVE: 1. to recognize a map symbol as being a point, line, or area symbol.
           2. to use the appropriate colors on symbols.
           3. to recognize qualitative and quantitative symbols.

1. Refer to the 1:100 000 map sheet of Kelowna. The symbols on this map tell you
   what the place looks like. Everything on the map is a symbol. There are three
   main groups of symbols:

       A. point symbols: are small symbols to represent a feature at a particular
          place. Examples are buildings, mines, lighthouses, bench marks.

       B. line symbols: are symbols in the shape of curved or straight lines.
          Examples are roads, railways, rivers, power-lines, contour lines,

       C. area symbols: are symbols that cover a fairly large area. Examples are
          lakes, swamps, forests, orchards, glaciers.

2. Refer to the 1:100 000 map sheet of Kelowna. Five main colors are used to
   illustrate the various map symbols.

       A.   brown – shows relief or contours
       B.   blue – show drainage (lakes and streams)
       C.   green – shows forested areas or woodlands when included
       D.   red and black – show cultural or manmade features
       E.   occasionally other colors will be used for specific purposes such as to show
            timber leases. These special cases will usually be shown in the legend.

3. Map symbols can also be classified as qualitative or quantitative.

       A. qualitative map symbols show a specific type of feature. There is no value
          placed upon the symbol. An example is a world vegetation map.

       B. quantitative map symbols show both a type of feature and an amount. An
          example would be a world map of rainfall.

       C. examples of all types of map symbols are illustrated on the next page.

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