A contour line is a line on a map that connects points of equal elevation.
Here's why this is the most helpful definition:
* Clarity: It directly states what a contour line represents, eliminating ambiguity.
* Specificity: It emphasizes the connection of points with the same elevation, highlighting the key characteristic of contour lines.
* Functionality: It explains the core function of contour lines – to represent terrain and elevation on a map.
Additional points to consider:
* Contour lines never cross each other.
* Closer contour lines indicate a steeper slope, while further apart lines indicate a gentler slope.
* Contour lines help to visualize hills, valleys, and other topographic features.