Final answer:
Map projection is the process by which the curves of a globe are represented as straight or slightly curved lines on a map.
Step-by-step explanation:
When the curves of a globe become straight or only slightly curved lines on a map, this occurs in the process of map projection. Map projection is the method of representing the 3-dimensional surface of the Earth onto a 2-dimensional map. Depending on the type of projection used, the curved lines on the globe can be transformed into straight or slightly curved lines on the map.