What are the characteristics of the contour lines?

Characteristics of Contours

Must close on themselves, on or off the map.
Perpendicular to the direction of max.
Slope between them is assumed uniform.
The distance between them indicates the steepness of the slope, gentle or steep.
Irregular signify rough, smooth signify gradual slopes.

What is a contour map PDF?

Contours maps (such as topographic maps) compress the information of a function over a two-dimensional area into a discrete set of closed lines that connect points of equal value (isolines), striking a fine balance between expressiveness and cognitive simplicity.

What are the different characteristics of contours that are kept in view while preparing or reading a contour map?

Characteristics of contours Contour lines of different elevation intersect only in case of overhanging cliff or a cave. the case of a vertical cliff. gentle slope if they are far apart. steepest slope at that point.

What are 4 rules of contour lines?

Rule 1 – every point of a contour line has the same elevation. Rule 2 – contour lines separate uphill from downhill. Rule 3 – contour lines do not touch or cross each other except at a cliff. Rule 4 – every 5th contour line is darker in color.

What are the characteristics of contour lines also describe the methods of interpolation of contours?

Characteristics of Contour Maps Contour lines must close, not necessarily in the limits of the plan. Widely spaced contour indicates flat surface. Closely spaced contour indicates steep ground. Equally spaced contour indicates uniform slope.

What characteristic of contour lines indicates steep terrain?

Closely spaced contour lines indicate a steep slope (Figure F-1). 2. Widely spaced contour lines indicate a gentle slope (Figure F-2).

What do contour lines represent on a topographic map?

Elevation contours are imaginary lines connecting points having the same elevation on the surface of the land above or below a reference surface, which is usually mean sea level. Contours make it possible to show the height and shape of mountains, the depths of the ocean bottom, and the steepness of slopes.

How do contour lines show the direction of stream flow?

A general rule of thumb is that water flow is perpendicular to contour lines. Water always flows downhill perpendicular to the contour lines. As one proceeds upstream, successively higher and higher contour lines first parallel then cross the stream. This is because the floor of a river valley rises as you go upstream.

What is the importance of contour lines?

These contour lines are an important way of showing the rise and fall of the land on a map. Contour lines show all the places that are the same height above sea level. They also tell us about the slope of the land. On a steep slope, the lines are close together.

What are the 8 rules of contouring?

General Rules for Contour Lines
1.	Contour lines connect points of equal elevation; therefore every point along a contour line is the exact same elevation.
3.	Contour lines never split or divide.
4.	Contour lines always separate points of higher elevation (uphill) from lower elevation (downhill).
5.

What do you understand by term contour also explain properties of contour lines?

CONTOUR :- A CONTOUR IS AN IMAGINARY LINE ON THE GROUND JOINING THE POINTS OF EQUAL ELEVATION. IT is the line in which the surface of ground is intersected by a level surface. A contour line is a line on the map representing a contour.

What are the various uses of contour?

Uses of contours maps

Uses of contours maps. Contours provide valuable information about the nature of terrain.
Nature of Ground.
To Locate Route.
Intervisibility between Stations.
To Determine Catchment Area or Drainage Area.
Storage capacity of a Reservoir.