What is the term for the elevation difference between two adjacent contour lines?

What is the term for the elevation difference between two adjacent contour lines?

• A. Contour Interval
• B. Contour Distance
• C. Elevation Difference
• D. Slope Gradient

Answer: (A)

The elevation difference between two adjacent contour lines is called the contour interval. On a topographic map, contour lines connect points of equal elevation, and the vertical gap between successive lines is fixed for that map. This interval tells you how much elevation changes from one line to the next, such as a 10-meter interval where elevations jump from 100 m to 110 m between lines. The spacing of lines relates to slope: closely spaced lines indicate steep terrain, while widely spaced lines indicate gentler slopes. Other terms like contour distance describe horizontal spacing, elevation difference is a general change in height, and slope gradient refers to how fast elevation changes over distance.

The elevation difference between two adjacent contour lines is called the contour interval. On a topographic map, contour lines connect points of equal elevation, and the vertical gap between successive lines is fixed for that map. This interval tells you how much elevation changes from one line to the next, such as a 10-meter interval where elevations jump from 100 m to 110 m between lines. The spacing of lines relates to slope: closely spaced lines indicate steep terrain, while widely spaced lines indicate gentler slopes. Other terms like contour distance describe horizontal spacing, elevation difference is a general change in height, and slope gradient refers to how fast elevation changes over distance.