Question

In the given diagram the \(\Delta\)P line represents a ________.

• A. Ridge line
• B. Slope line
• C. Valley line
• D. Vertical line

Hint:

Look at how the contour lines bend: the bends point toward the lower elevation, and the dashed line joins the bends.

Answer 1

The Correct Option is A

The figure is a contour map with values 100 at the top decreasing to 60 at the bottom, so the high ground is at the top and the land falls away downward.
Each contour makes a U-shaped bend whose rounded end points toward the lower elevation (away from the higher contours). Contours bending toward lower ground indicate a spur or ridge, whereas for a valley the bends point toward higher ground.
The dashed line \(\Delta\)P runs along the apex of all these bends, so it traces the crest of the ridge.
Answer: (1) Ridge line