Match each graph with its contour plot. You can rotate each graph by clicking and dragging. If you click on a contour plot, a larger plot will appear in a new window. In the contour plots, darker areas represent lower elevations and lighter areas represent higher elevations.

 
 
 
1.   2.   3.   4.
     
A   B   C   D

(Click on a graph to enlarge it.)

You can earn 50% partial credit for 2 - 3 correct answers.