Question

What are contour? State their properties​

Answer 1

Explanation:

contour lines are an imaginary line of a terrain that joins the point of equal elevation above a given level, such as mean sea level or benchmark.

Characteristics of Contour Lines in Surveying

Following are the characteristics of contour lines in surveying for reading contour maps:

No two lines meet on intersect each other in any case.

All lines close themselves within the map boundaries or outside it.

If the contour lines are very close to each other, this indicates steep slope.

If the contour lines are at very large distance to each other, this indicates a gentle slope.

If the closed lines have higher elevation in the center then it represents the hill or mountain.

If the closed line have increasing elevation as we move away, then it represents a pond or a depression in the ground profile.

In a single contour line, at any point the elevation is same.

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Answer 2

your answer

In cartography, contour lines are an imaginary line of a terrain that joins the point of equal elevation above a given level, such as mean sea level or benchmark.

This animation features a static image of a contour surface on the left and an oblique 3-D view of the same area. Upon starting the animation, by clicking adjacent arrows, a surface of water begins to rise. By examining the views in both windows, a simulated flood shows how contour lines trace out equal elevations and how concave/convex undulations in the contour lines would be represented in 3-D. The animation can be paused and rewound to stress important points.

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