- Identify the contour lines that intersect line AB and note their elevations (e.g., 230m, 240m, 250m, 260m, 270m, 280m, 290m, 300m).
- On the grid for “Profile Along Line AB,” plot a point at the correct elevation for each contour line crossing, using the horizontal axis to represent distance from A to B.
- Connect all plotted points with a smooth, curved line to form the topographic profile.
- For gradient between C and D: Determine the elevation difference (ΔElevation) by subtracting D’s elevation from C’s elevation. Measure the horizontal distance (ΔDistance) between C and D using the map scale. Calculate gradient = ΔElevation / ΔDistance (in meters per kilometer or as a percentage).
Parent Tip: Review the logic above to help your child master the concept of topographic map worksheet.
