RULE OF "Vs" - Contour lines form a "V" when they cross a stream or river. The innermost hachured contour has the lowest elevation the outermost hachured contour has the highest elevation. HACHURED LINES - Represent depressions, volcanic craters, and basins.
The inner most closed contour has the highest elevation the outermost closed contour has the lowest elevation If the numbers associated with specific contour lines are increasing, the elevation of the terrain is also increasing.ĬLOSED CONTOURS - Represent hills or mountains. A contour is a line on a map that connects adjacent points of equal elevation.ĬONTOUR INTERVAL (C.I.) - A contour interval is the vertical distance or difference in elevation between contour lines. Topographic maps employ contours as the best way of efficiently and accurately representing the three-dimensional character of the Earth’s surface on a flat, two-dimensional surface. Materials needed to complete this lab: ruler, string, and a calculator.Įlevation - The Earth’s surface is highly irregular, displaying mountains, valleys, cliffs, slopes and depressions.
CONTOUR INTERVAL CALCULATOR MANUAL
MAPS: CONTOURS, PROFILES, AND GRADIENT - Pages 45 through 58 in your lab manual
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