difference in elevation between highest and lowest points
height above mean sea level
lines that connect point of equal elevation
every fifth contour is darker and labeled by elevation
key to map symbols
direction of magnetic north pole (what the compass points to)
direction of geographic north pole
difference between true north and magnetic north
contours that cross a stream
form a "v" shape and flows towards the open part of the "v"
shows a hill
Representative Scale (R.F. or scale)
how many times the map has been reduced,ie 1:1,000,000
lines that connect points of equal temperature
lines that connect points of equal pressure
map projection use to draw topographic maps
distance in degrees north and south of the Equator
distance in degrees east and west of the Prime Merdian
use to show craters and hollows on a map
places where exact elevations are shown on permentant plates
United States Geological Survey. Responsible for making topographic maps and other maps
7.5 minute quadrangle
USGS map series
slope or how steep the land is
shown by contour lines far apart
shown by contour lines close together
shows elevation changes across a map section
methods include Landsat and imaging radar
map where a physical feature is measured
difference in elevation between one contour line and the next contour line (vertical distance)
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