NICET - Highway Construction Inspection Practice Exam

True or False: The closer the contour lines, the steeper the slope.

1. True

2. False

3. Depends on the scale

4. Only true in some cases

The correct answer is: True

The correct understanding is that closer contour lines indicate a steeper slope. In topographic maps, contour lines represent points of equal elevation. When these lines are spaced closely together, it shows that there is a significant change in elevation over a short horizontal distance, which signifies a steep slope. Conversely, when contour lines are farther apart, the elevation changes gradually, indicating a gentle slope. Thus, the relationship between the proximity of contour lines and the steepness of the slope is a fundamental principle in interpreting topographic maps. It's a universal trait regardless of scale or specific scenarios, reinforcing that the accuracy of the statement holds true across various contexts of slope assessment. This principle is vital for anyone involved in fields like surveying, engineering, or landscape design, where understanding elevation changes is crucial for effective planning and construction.