How Are Landforms Represented on Flat Maps?
ES0307  Contour Lines and Elevation

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.

Stephen J. Reynolds and Carla McAuliffe,
Arizona State University

3. Which part of this land is the last to flood as the water rises?

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