A contour interval is the vertical distance or difference in elevation between contour lines. Index contours are bold or thicker lines that appear at every fifth contour line. If the numbers associated with specific contour lines are increasing, the elevation of the terrain is also increasing.
What is contour interval on a map?
Individual contour lines on a topographical map are a fixed interval of elevation apart known as a contour interval. Common contour intervals are 5, 10, 20, 40, 80, or 100 feet. The actual contour interval of a map depends upon the topography being represented as well as the scale of the map.
What is a contour interval answers?
A contour interval is the vertical distance or difference in elevation between contour lines. Answer: Contour Interval is the difference in altitude represented by the space between two contour lines on a map.
What is a contour interval and on what factors does it depend?
The contour interval depends upon the general topography of the terrain. In flat ground, contours at small intervals are surveyed to depict the general slope of the ground whereas high hills can only be depicted with contours at larger contour interval.
Why is a contour interval important?
A higher contour interval is used for a large area and small contour interval for small area. In a large map, index contour lines are less to keep it simple to read the map easily. In this case, to find out the intermediate points elevation, contour intervals are used.
What is the contour interval of the map quizlet?
What is the contour interval on a map based on? The relief in the area. The difference in elevation between the highest and lowest points in the area on the map.
What contour interval would you suggest for a hilly survey?
The common value is 20 to 30 m in hilly country and 100m in flat country.
What is contour in surveying PDF?
An Imaginary line on the ground surface joining the points of equal elevation is known as contour. In other words, Contour is a line in which the ground surface is intersected by a level surface obtained by joining points of equal elevation. This line on the map represents a contour and is called Contour line.
