Topographic+Maps

Topographic Map A map which shows elevation of the land with the use of contour lines, shapes and symbols

Counter lines lines drawn to connect points of the same elevation

Three things contour lines shows us Elevation Contour Interval- The difference in elevation between two consecutive contour lines Index contour- Every four or fifth line which darkened for easy reading

Steepness of slopes  -closer contour lines=steep slopes  - well-spaced contour lines=flatter,gentle slopes The shape of the land at various hight Elevations of Land below Sea level (sinkhole,quarry,mine) Measured using a Hachure Line The "whiskers" point to the lower elevation <span style="font-family: 'Comic Sans MS',cursive;">**First depression line takes the value of the contour line surrounding it <span style="font-family: 'Comic Sans MS',cursive;">Information learned for a topogrpahic map <span style="font-family: 'Comic Sans MS',cursive;">A benchmark point is a location whose exact elevation is know and is noted on a brass aluminum plate (BM) <span style="font-family: 'Comic Sans MS',cursive;">A maximum elevation- Highest possible elevation <span style="font-family: 'Comic Sans MS',cursive;"> Figure out what the next possible contour line would be then subtract 1 unit <span style="font-family: 'Comic Sans MS',cursive;">Minium elevation- Lowest possible elevation <span style="font-family: 'Comic Sans MS',cursive;"> The next possible depression line then plus 1 unit. <span style="font-family: 'Comic Sans MS',cursive;">Rivers cut a valley and cause contour lines to form a V-shape pointing to the source of the stream (upstream) <span style="font-family: 'Comic Sans MS',cursive;">Gradient= __Change in Elevation (ft)__ <span style="font-family: 'Comic Sans MS',cursive;"> Distance <span style="font-family: 'Comic Sans MS',cursive;">Profile- Side view of the shape of the land on a topographic map <span style="font-family: 'Comic Sans MS',cursive;">Relief- Difference in elevation <span style="font-family: 'Comic Sans MS',cursive;">Relief Map-Raised which shows difference in elevation (3D) <span style="font-family: 'Comic Sans MS',cursive;"><span style="font-family: arial,helvetica,sans-serif;">