Rocks and Landforms I-2 Notes

Topographic Maps Topography is the shape of the physical features of the land surface. The best way of showing the shape of the land in an area is by using a topographic map

Topographic maps show you the elevations and features of hills and valleys. Hills and valleys are marked with a series of curves called contour lines. A contour line connects all the points on the land surface that are at the same elevation.

The difference between each contour line is called the contour interval The contour interval used on a topographic map depends upon the region’s relief. A region’s relief is the difference between the lowest and highest points.

Color and symbols on topographic maps are used to show natural and human-made features such as rivers, mountains, orchards, forests, roads, schools, and industries.

Blue Used to show water

Green Vegetated Areas

Black Squares Buildings

Each topographic map shows latitudes and longitudes across the region by marks along the edges of the maps

Key or Legend Map scale Meaning of the symbols on the map Date the map was made