Question

The difference in elevation between the highest and lowest contour lines on a topographical map is called: a. contour interval c. relief interval b. relief d. contour index

Answer 1

The right option is a. contour interval

The difference in elevation between the highest and lowest contour lines on a topographical map is called contour interval.

A contour interval is the vertical distance between the two contour lines (highest and lowest) in a topographical map. The contour interval is usually stated explicitly on the right-hand lower part in every map. 20 feet for a 1:24,000 map scale is the frequently used contour interval and different contour intervals is available for different maps.  

Answer 2

The difference in elevation between the highest and lowest contour lines on a topographical map is called a contour interval.