Topographic Map

topographic Map A role is a deputation of the Earth, or part of it. The shape of the Earths step up is shown by contour lines. Contours atomic number 18 imaginary lines that combine points of equal elevation on the surface of the land to a higher place or below a part surface, such(prenominal) as mean sea level. It gives o streak the height of mountains, o depths of the ocean bottom, and o steepness of slopes. The map includes symbols that represent such gasconades as streets, buildings, streams, and ve chokeation. Reading Topographic Maps o Interpreting the sorry lines, body politics, and new(prenominal) symbols is the first step in using topographic maps. o Features ar shown as points, lines, or areas, depending on their surface and extent. For example, individual houses may be shown as small cruddy squares. o For larger buildings, the actual shapes are mapped. In thickly built-up areas, most individual building s are omitted and an area tint is shown. On some maps, post offices, churches, city halls, and other landmark buildings are shown within the tinted area. o The first features ordinarily noticed on a topographic map are the area features, such as vegetation (green), water (blue), and densely built-up areas (gray or red).

o many an(prenominal) features are shown by lines that may be straight, curved, solid, dashed, dotted, or in any combination. The colors of the lines usually indicate quasi(prenominal) classes of information: topographic contours ( chocolate-brown); lakes, streams, irrigation ditch es, and other hydrographical features (blue! ); land grids and beta roads (red); and other roads and trails, railroads, boundaries, and other cultural features (black). At one time, purple was used as a adjustment color to show all feature changes. Currently, purple is not used in our revision program, unless purple features are unbosom present on many existing maps. o Many features are identified by labels, such as Substation or Golf Course. o Topographic contours are shown in brown by lines of...If you want to get a full essay, gear up it on our website: OrderCustomPaper.com

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