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Unformatted text preview: - Vertical distance between two sequential contour lines Start at 0 or mean sea level Datum plane (mean sea level) When contour lines are very close together the elevation is steep Check contour interval (how big or small it is) Use estimates to draw some lines Always use pencil Contours have to bend upwards when crossing a river. . go up towards opposite direction water is going. . if water going south contours bend up towards the north. . See back of first lab hand out Gradient- A measure of the rate of change of a variable (elevation) across some distance- Gradient (% slop) = (rise/run) *100 Rise - elevation change in meters Run - horizontal ground distance in meters See back of first lab handout for example Slope Grade reversals - help prevent water from fucking up the trail. . helps water move down mountain or trail without eroding the trail Google Earth- can see a side view to see topography and landscape...
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This note was uploaded on 03/31/2010 for the course GEO GG101 taught by Professor __ during the Winter '10 term at Wilfred Laurier University .
- Winter '10