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ELL Earth Sci 3.2&3

Reading Maps

cartography the science of making maps
map projection a flat piece of paper which represents the 3-dimensional curved surface of a globe
legend a list of symbols and their meanings (also called a key)
scale a relationship between distance shown on the map and actual distance
topographical map map showing surface features of the Earth
elevation height above or below average sea level (mean sea level)
mean sea level midpoint between the highest and lowest tides of the ocean
contour line line on a topographical map connecting points of the map having the same elevation
contour interval the difference in elevation between two contour lines
index contour a bold contour line printed every 5th line making it easier to view elevation changes on a map
relief the distance between the highest and lowest elevations of the area being mapped
depression contours contour lines marked with short straight lines to show depression (ie top of volcanos)
Created by: Jesse Wayland