The circles are called contour lines. A contour line connects points of the same elevation. When the lines are close together on a map that show the land is steep.
The circles themselves represent elevation, the disatnce between the circles(elevation points) show distances between elevations, therefore showing you rate of elevation increase/decrease, also.
Depression
Closed circles represent hilltops or peaks on a topographic map. They indicate the highest elevation point within a specific area. The concentric circles around the closed circle show the gradual decrease in elevation as you move away from the peak.
Contour lines that are closely spaced
A topographical map shows the physical features of an area, such as mountains, valleys, rivers, and forests. It uses contour lines to represent elevation, helping users visualize the terrain and plan routes for hiking, biking, or other outdoor activities.
Circles on a map typically represent points of interest or locations, such as cities, landmarks, or specific geographic features. The size of the circle may indicate the significance or size of the location it represents.
hills and mountains are represented by circles on topographic maps.
That is the correct spelling of "topographical" (on an elevation map).
A topographic map measures elevation by showing contour lines that represent changes in elevation on the Earth's surface. These lines connect points of the same elevation, allowing users to visualize the terrain and understand the steepness of slopes.
a TOPOGRAPHICAL MAP shows the contour of the lines
A Topographical Map.
Topo - possibly from topographical map.