A contour interval of 10 m is used on a map. The vertical distance between two adjacent contour lines is therefore:
Correct answer: C. 10 m
- A. 1 m
- B. 5 m
- C. 10 m
- D. 100 m
Explanation
Contour interval is the constant vertical difference in elevation between consecutive contour lines. It is measured in elevation units and should not be confused with the horizontal spacing between the lines on the ground.
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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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