Flashcard Set Preview
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topographic map
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a two-dimensional (flat) representation (model) of a three-dimensional land surface (landscape)
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Relief
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difference in elevation
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contour lines
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represents elevations of hills and valleys
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www.usgs.gov
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US topographic maps are published by US Geological Survey
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maps.nrcan.gc.ca
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Canadian topographic information of natural resources
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quadrangle
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a section of earths surface that is bounded by lines of latitude at the top (north) and bottom...
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index contours
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heavy brown contour lines that have elevations printed on them
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contour interval
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five contours for every 400 ft would make this contour interval 80 ft
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principal meridians
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north and south lines
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base lines
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east and west lines
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townships
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numbered relative to the base line
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ranges
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east west squares numbered relative to the principal meridian
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UTM
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Universal transverse mercator systemrectangular grid measured in decimal-based metric units...
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datum
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regional or continental surveys identified on the basis of its location and the year it was...
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bearing
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the compass direction along a line from one point to another
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