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The image on the left is a topographic
map. Maps like these are also called contour maps after
the contour lines that trace out areas of equal elevation.
On the right, an oblique view shows a 3-D model of the
same area.
As the surface of water always remains
flat, simulating a flood of this area can show how contour
lines trace out equal elevations.
! Click the up and down arrow buttons to simulate water flooding this area. Examine how the water level in the view on the right is related to the contour lines on the left.
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