A line joining points of equal elevation on a map is called a:
Correct answer: B. Contour line
- A. Datum line
- B. Contour line
- C. Grid line
- D. Chain line
Explanation
A contour line connects points having the same reduced level or elevation. Grid lines show a reference coordinate system, not equal ground elevations.
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Surveying covers measurement of distances, angles and elevations, traversing, levelling, contouring, plane table work, theodolites, total stations and basic photogrammetry. It includes error adjustment, coordinate calculations, area and volume determination, and the distinction between accuracy and precision, as well as between temporary and permanent adjustments.
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