'Contour lines' on a topographic map cannot:
Choose the correct answer
Represent uniform slope on a hillside
Two contours of different elevation values can never merge or cross (except at a vertical cliff shown by special treatment)
Show valleys as V-shapes pointing uphill
Be closely spaced for steep terrain
Correct Answer
B. Two contours of different elevation values can never merge or cross (except at a vertical cliff shown by special treatment)
Why is this the answer?
Contour properties: (1) Each contour represents constant elevation; (2) Contours never cross each other (except overhanging cliff — shown dashed); (3) Closely spaced = steep slope; (4) Widely spaced = gentle slope; (5) V-shape pointing uphill = valley; V pointing downhill = ridge/spur. Contours CROSS at overhangs. Two different contours with different elevations NEVER merge on flat ground (would imply same elevation at two adjacent contour values).
Related Surveying MCQs
More solved Surveying questions for AE/JE Civil Engineering exams.
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