Question: What Are The Features Of Contour Lines?

What are the basic features of contour lines?

Other characteristics of contour lines are: – Uniform slopes have uniformly spaced lines.

– Along plane surfaces, contour lines are straight and parallel.

– Contour lines are perpendicular to lines of steepest slopes.

– For summits or depressions, contour lines most close upon themselves..

What is the space between contour lines called?

The space between the contour lines is called the contour interval and represents a specific (set) distance. If the contour interval is 50 feet, the vertical space between the two contour lines is 50 feet.

What is a contour index?

A contour line shown on a map in a distinctive manner for ease of identification, being printed more heavily than other contour lines and generally labeled with a value (such as figure of elevation) along its course.

What are the 7 elements of a map?

Elements of a MapData Frame. The data frame is the portion of the map that displays the data layers. … Legend. The legend serves as the decoder for the symbology in the data frame. … Title. The title is important because it instantly gives the viewer a succinct description of the subject matter of the map. … North Arrow. … Scale. … Citation.

What are the 5 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 do you understand by observing contour lines?

Contour lines are brown lines which connect all places in area with the same height. They give us information about landforms like mountains and River valley if we carefully observe their structure. Also sudden breaks in these lines means a sudden fall in height like waterfalls and cliffs.

What contour means?

1 : an outline especially of a curving or irregular figure : shape the sleek contours of the car The map shows the contour of the coastline. also : the line representing this outline. 2 : the general form or structure of something : characteristic —often used in pluralthe contours of a melody…

What are topographic symbols?

A topographic map shows more than contours. The map includes symbols that represent such fea- tures as streets, buildings, streams, and vegetation. These symbols are con- stantly refined to better relate to the features they represent, improve the appearance or readability of the map, or reduce production cost.

What are the main features of a topographic map?

The distinctive characteristic of a topographic map is the use of elevation contour lines to show the shape of the Earth’s surface. 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.

What are contour lines in geography?

Contour line, a line on a map representing an imaginary line on the land surface, all points of which are at the same elevation above a datum plane, usually mean sea level. … map: contour lines. The diagram illustrates how contour lines show relief by joining points of equal elevation.

What are 3 types of contour lines?

There are 3 kinds of contour lines you’ll see on a map: intermediate, index, and supplementary.Index lines are the thickest contour lines and are usually labeled with a number at one point along the line. … Intermediate lines are the thinner, more common, lines between the index lines.More items…

What are the importance of contour lines?

The purpose of contour lines is to represent the tridimensional shape of the terrestrial surface on a bidimensional map. Contour lines are the intersection of an horizontal plane parallel to the reference level and the topographical surface to describe. Consequently: Contour lines are always closed curves.

What are the uses of contour?

Uses of contours mapsUses of contours maps. Contours provide valuable information about the nature of terrain. … Nature of Ground. To visualize the nature of ground along a cross section of interest,To Locate Route. … Intervisibility between Stations. … To Determine Catchment Area or Drainage Area. … Storage capacity of a Reservoir.

Can contour lines cross?

Contour lines can never cross one another. Each line represents a separate elevation, and you can’t have two different elevations at the same point.

What are the 5 features of a map?

Most maps will have the five following things: a Title, a Legend, a Grid, a Compass Rose to indicate direction, and a Scale.