A line mapped out by connecting points of identical elevation or head is designated as ____________________?
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Answer: B. Contour line
Explanation
A contour line is mapped by connecting points that share an identical elevation above a reference datum. Surveyors trace these lines across the landscape to represent three-dimensional terrain topography on flat maps. Spacing between adjacent contour lines indicates the steepness or gentleness of the ground slope. Topographic maps utilize contour intervals to indicate specific vertical distance differences between adjacent mapped lines. Orthometric height references contour lines to mean sea level measurements established by geodetic surveys. Interpolation techniques help surveyors plot smooth contour lines between surveyed spot elevation points.
Civil engineers rely on contour maps to plan road alignments, drainage networks, and building site grading. Farmers use contour lines to design erosion-control farming practices like contour plowing and terracing. Hikers and geologists read topographic contours to navigate complex terrain features and understand landscape relief. Check line refers to a surveying measurement used to verify the accuracy of a traverse or triangulation network. Ordinate line represents vertical coordinates on a Cartesian graph rather than physical terrain elevations. All are correct is false because only contour lines connect points of identical ground elevation.
- Subject
- Agriculture
- Category
- Agriculture
- Topic
- —
- Difficulty
- medium
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