What Are Contour Lines?

What are contour lines short answer?

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. … A topographic map with contour lines connecting places that are the same height above sea level.

How do you describe a contour line?

Contour lines are lines drawn on a map connecting points of equal elevation meaning if you physically followed a contour line elevation would remain constant. Contour lines show elevation and the shape of the terrain. … The line you see will look like a contour line on a topographic map.

What are contour lines for Class 8?

Contour – Brown continuous curved lines joining the places having the same height or elevation above the mean sea level. It shows elevation steepness and shape of the land.

What are 3 types of contour lines?

Contour lines are of three different kinds. They are the Index lines Intermediate lines and the Supplementary lines.

What are contour lines Class 9?

Complete answer: Contour lines are the lines for joining points of equal height above or below the sea level. Contour interval is the vertical distance between the two contour lines and these lines are next to each other.

What are contour lines in Brainly?

Contour lines are an imaginary lines drawn on a map by joining all the same height points (above the mean sea level) on the earth. It is a plane section representing 3D graph. A contour line which is often just called a “contour” .

Why are contour lines used?

In cartography a contour line (often just called a “contour”) joins points of equal elevation (height) above a given level such as mean sea level. A contour map is a map illustrated with contour lines for example a topographic map which thus shows valleys and hills and the steepness or gentleness of slopes.

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What is the space between contour lines called?

contour interval
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.

What is the best definition of a contour line?

Definition of contour line

: a line (as on a map) connecting the points on a land surface that have the same elevation.

What are contour lines 7 class?

Contour lines are lines drawn on a topographic map connecting points of equal elevation. They are also called “level- lines”.

What is contour in geography?

Definition: Contours are a collection of lines found on maps that show mountains valleys and landforms. Contours are measured from sea level. … Contours can be used to understand the map and to know where land will be steep or flat.

What is topography in geography class 8?

The topography is a broad term that describes a landmass in detail. Furthermore it is the art of practice of portraying a surface in maps or charts. It shows natural as well as manmade features and tells about their relative positions and elevations.

What are 4 types of contour lines?

Following are the uses and importance of different types of contour lines in surveying:
• Isopleth. Isopleth on a contour map connects the places having the same value of some measurable quantity of geographical or meteorological phenomena. …
• Isohyet. …
• Isobar. …
• Isobath. …
• Isohaline. …
• Isotherm. …
• Isohel. …
• Isohume.

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 is contour in civil engineering?

❖Contour. • 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.

What is contour lines on 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.

What are contour lines and how it is useful?

Contour lines are lines drawn on a map with equal elevation points so elevation would be constant if you followed the contour line physically. The elevation and terrain shape of the contour lines shows. It is useful because they show the form of the land surface on the map–its topography.

What is an atlas answer?

An atlas is a book or collection of maps. Many atlases also contain facts and history about certain places. There are many kinds of specialized atlases such as road atlases and historical atlases. … Besides showing maps of all the countries and continents a world atlas may also provide facts about the countries.

Why do we use symbols in maps?

Symbols are used in maps to represent or indicate real objects or characteristics. Maps are a reduced representation of the world and so symbols are used to make sure that a person easily reads a map while correlating them with the real world.

What is contour explain with example?

A Contour line is an imaginary outline of the terrain obtained by joining its points of equal elevation. In our example of the cone each circle is a contour line joining points of same level. Define Contour Interval (CI) Contour interval is the difference between the levels of consecutive contour lines on a map.

What does contour mean in drawing?

outline drawing

contour drawing version of outline drawing in which the artist looking closely at the contour of an object transfers it in one continuous line to paper without looking down to see what he is doing except when he needs to place an internal feature such as an eye.

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What are contours and their features?

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.

How do contours work?

Put simply contour lines mark points of equal elevation on a map. If you trace the length of a line with your finger each point you touch is the same height above sea level. If you were to walk the path of a contour line in real life you would remain at the same elevation the whole hike never traveling up or down.

What is the zero contour line?

contour interval. The zero contour line is. sea level. the line that is shaded darker than the rest is the. index contour.

What happens if you walk along a contour line?

If you walk along a contour line you will not go uphill or downhill. … Each line connects all points of a specific elevation. Contour lines never cross since a single point can only have one elevation. Every fifth contour line is bolded and labeled.

What is the contour of an object?

In the world of art a contour line is a line which defines a form or an edge. It is essentially the outline or silhouette of a given object or figure.

What is a contour line in social?

or contour line line on a topographic map connecting points of equal elevation above or below mean sea level. It is thus a kind of isopleth or line of equal quantity. … They may be visualized as representing shorelines if sea level were raised in small increments.

What is the Colour of contour lines?

A)Most contour lines on a map which are relief features and elevations are coloured brown. Contour lines which are commonly curved parallel brown lines connect locations of equal elevation to indicate the form and elevation of the ground.

What are contours in agriculture?

contour farming the practice of tilling sloped land along lines of consistent elevation in order to conserve rainwater and to reduce soil losses from surface erosion.

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What is topography short answer?

Topography is a detailed map of the surface features of land. It includes the mountains hills creeks and other bumps and lumps on a particular hunk of earth. … Topography represents a particular area in detail including everything natural and man-made — hills valleys roads or lakes.

What is the topography of India?

India is endowed with almost all the important topographical features such as high mountains extensive plateaus and wide plains traversed by mighty rivers. The country is bounded by Himalayas in the North and has a large peninsular region tapering towards the Indian Ocean.

What is topography and landform?

Topography refers to the elevation and relief of the Earth‟s surface. ▪ Landforms are the topographic features on the Earth‟s surface. ▪ Geomorphology is the study of earth surface processes and landforms.

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