1. These maps help us to understand the nature of the terrain, where the mountains are, where the valleys are, etc.
2. If we look at the physical map of Andhra Pradesh, we can identify the coastal plains that run along the coast of the Bay of Bengal.
3. If we travel westwards from the coast, we will reach hills that form the “escarpments” to the plateau region.
4. The plateau region itself is cut by many rivers like the Krishna and the Godavari which form deep and broad valleys in them.
5. Maps showing heights are very essential when roads or dams have to be constructed.
6. If we have to lay roads in an undulating region between two places, such maps help us in deciding the route to be taken by the road.
7. Similarly, when dams are planned it is necessary to know how much land will be submerged by the water of the dam.
