1) Reassemble your mountain by stacking the four pieces in the correct order . In the answer space, sketch a picture of your mountain and its corresponding topographic map. The mountain sketch should be a side view and should include the horizontal dashed lines indicating each section of the mountain that you traced onto your topographic map. 2) On your topographic map, what is the elevation gradient-the difference in elevation- between each contour line? Why is it important that each contour line represent the same amount of gain or loss in elevation?