Final answer:
The steepest side of Calton Hill is identified on a topographic map by looking for the side where the contour lines are closest together, indicating a steep gradient.
Step-by-step explanation:
To determine which side of Calton Hill is the steepest using a topographic map, we look for the density of the contour lines. The steeper the slope, the closer together the contour lines will appear on the map. Steeper gradients are indicated by lines that are more tightly packed, as the elevation changes more rapidly over a shorter horizontal distance. Conversely, a gentler slope will be represented by contour lines that are more spaced out, as the elevation changes less over a longer horizontal distance.
Without the actual map of Calton Hill for reference, these general principles of topography should be applied: identify the areas where the contour lines are closest together to spot the steepest side of the hill. This examination of the actual map will reveal the steepness of the terrain.