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Contour interval on a map sheet denotes-
  • a)
    Vertical distance of contour lines above the datum plane
  • b)
    Vertical distance between two successive contour lines
  • c)
    Slope distance between two successive contour lines
  • d)
    Horizontal distance between two successive contour lines
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Contour interval on a map sheet denotes-a)Vertical distance of contou...
A contour line is a line drawn on a topographic map to indicate ground elevation or depression. A contour interval is a vertical distance or difference in height between contour lines. Index contours are bold or thicker lines that appear at every fifth contour line.
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Most Upvoted Answer
Contour interval on a map sheet denotes-a)Vertical distance of contou...
Contour interval on a map sheet denotes the vertical distance between two successive contour lines.

- Explanation:
A contour line is a line on a map that connects points of equal elevation. It represents the shape of the land by indicating the elevation and slope of the terrain. Contour lines are usually drawn at regular intervals, and the contour interval is the vertical distance between two adjacent contour lines.

- Vertical distance:
The contour interval represents the vertical distance between contour lines on a map. It is the difference in elevation between each contour line. For example, if the contour interval is 10 meters, each contour line represents a vertical distance of 10 meters above or below the adjacent contour line.

- Representation of elevation:
By using contour lines with specific intervals, the map can effectively represent the elevation of the land. The closer the contour lines are to each other, the steeper the slope of the land. Conversely, when the contour lines are spaced further apart, it indicates a gentler slope.

- Identification of features:
Using the contour interval, it is possible to identify various landforms and features on the map. For example, when contour lines are closely spaced, it indicates a steep slope or a hill. On the other hand, widely spaced contour lines may indicate a flat or gently sloping area.

- Determining elevation:
By knowing the contour interval and counting the number of contour lines crossed, it is possible to determine the elevation of a specific point on the map. For instance, if a point is located between two contour lines and one contour line is crossed, the elevation can be estimated by multiplying the contour interval by the number of contour lines crossed.

- Conclusion:
The contour interval on a map sheet denotes the vertical distance between two successive contour lines. It is a crucial aspect of topographic maps as it helps represent the elevation, slope, and various landforms accurately. Understanding the contour interval allows map users to interpret and analyze the terrain effectively.
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Contour interval on a map sheet denotes-a)Vertical distance of contour lines above the datum planeb)Vertical distance between two successive contour linesc)Slope distance between two successive contour linesd)Horizontal distance between two successive contour linesCorrect answer is option 'B'. Can you explain this answer?
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