Interpretation of Topographical Maps-II — Important Questions

Join places of equal height, Closely spaced contours show steep slopes, Widely spaced contours show gentle slopes, They are drawn at 20m vertical intervals

Contour lines join places of equal height, show slope through spacing (close = steep, wide = gentle), and are drawn at 20m intervals. They do not normally cross each other.

Dendritic

Dendritic drainage pattern resembles the veins of a leaf. It develops in regions with uniform rock structure where tributaries join the main river from all directions.

20 meters

In ordnance survey maps of 1:50,000 scale, contours are drawn at vertical intervals of 20 meters. This standard interval helps in accurate height representation.

Many causeways, Dry streams, Exposed river beds

Many causeways, dry streams, and exposed river beds indicate seasonal rainfall. These features show that water bodies dry up during certain seasons, requiring temporary crossings.