Which term describes the preservation of the relative sizes of geographic areas on a map?

Prepare for the Besavilla Cartography Exam. Use interactive tools like flashcards and multiple-choice questions with hints and explanations to enhance your skills. Get exam ready today!

Preserving the relative sizes of geographic areas on a map is an equal-area (also called equivalent) projection property. In an equal-area map, the area of any region on the map is proportional to its actual size on Earth, so large and small regions keep their true scale relative to one another. This makes it ideal for comparing how much space different countries or regions occupy, or for thematic mapping where area accuracy matters. The trade-off is that shapes can be distorted to achieve this accuracy—landmasses may look stretched or squashed, especially toward the edges. Other terms describe different distortions: a conformal projection keeps angles and local shapes but distorts areas; an equidistant projection preserves certain distances but not overall area; “true scale” isn’t the standard term used to describe preserving areas across the map.