What is another term for changes in elevation in the land?

Topography refers to the arrangement of the natural and artificial physical features of an area, which includes the variations in elevation and the shape of the terrain. It encompasses hills, valleys, mountains, and plains, providing a comprehensive understanding of the land's features. Detailed knowledge of topography is crucial in fields such as firefighting, as it influences fire behavior, the spread of wildfire, and tactical operational decisions.

The other terms listed can relate to environmental and fire management contexts but do not specifically describe changes in elevation. For instance, backfiring is a technique used in fire control, fuel continuity pertains to the arrangement and continuity of combustible materials, and flanking refers to a method of fighting fire by attacking it from the side rather than head-on. Therefore, topography is the most accurate term for describing changes in elevation in the land.