3.1.1. The contour interval of the orthophoto map is... A. 5 m B. 10 m C. 15 m D. 20 m

Did you know that contour intervals on maps are like a rhythm of the land? Each interval represents a specific elevation change, helping us visualize the terrain's ups and downs. For example, a 10 m contour interval means that each contour line is spaced out by 10 meters of elevation difference. This juicy detail can help you navigate and understand landscapes better! When working with orthophoto maps, a common mistake is to underestimate how the contour interval impacts the map's usability. If you choose a contour interval that’s too large for your area of interest, you might miss crucial shifts in terrain. On the flip side, a tiny interval can make the map cluttered and difficult to read. Always balance detail with clarity for the best results!