What is the relationship between a given distance on the earths surface and the same distance as represented on a map?

The relationship between a given distance on the Earth's surface and the same distance on a map is described by the map's scale. The scale indicates how many units on the map correspond to a specific number of units in reality, allowing users to convert measurements from the map to actual distances. For example, a scale of 1:100,000 means that 1 unit on the map represents 100,000 of the same units on the ground. Understanding this relationship is crucial for accurate navigation and distance estimation.