Question

If you are standing on a contour line labeled '300', and the contour interval is 20, what is the elevation of the next line higher up the hill?

• A. 320
• B. 280
• C. 305
• D. 400

Answer 1

Answer:

A. 320

• The correct answer is 320 because the elevation of each subsequent line is determined by adding the fixed contour interval to your starting point when moving uphill. • Elevation change on a topographic map follows a strict mathematical progression. Because a contour line connects all points of equal height, and the contour interval is the uniform vertical distance between those lines, moving from one line to the next requires you to either add or subtract that specific interval value based on your direction of travel.