What are the circular lines on a map called?
For a quick definition, a contour line joins points of equal and constant values. For example, contours on an elevation have constant heights that are the same on each line in a topographic map.
What is a circle on a topographic map?
On a topographic map, contour lines that form a circle indicate a hill or a mountain.
What would you see on a topographical map?
Topographic maps show contours, elevation, forest cover, marsh, pipelines, power transmission lines, buildings and various types of boundary lines such as international, provincial and administrative, and many others.
What do close contour lines show?
Contour lines that are very close together indicate a steep slope.
What are called contour lines?
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 latitude lines?
Lines of latitude, also called parallels, are imaginary lines that divide the Earth. They run east to west, but measure your distance north or south. The equator is the most well known parallel. At 0 degrees latitude, it equally divides the Earth into the Northern and Southern hemispheres.
What do circle contour lines represent?
On a topographic map, contour lines that form a circle indicate a hill or a mountain.
What are legends in map?
A legend displays the meaning of the symbols, colors and styles used to represent geographic data on the map. Legends consist of examples of the symbols on the map with labels containing explanatory text. Legends have patches that show examples of the map symbols.
What are some topographical features?
Topographical Features Examples include mountains, hills, valleys, lakes, oceans, rivers, cities, dams, and roads. Elevation – The elevation, or height, of mountains and other objects is recorded as part of topography. It is usually recorded in reference to sea level (the surface of the ocean).
How do you read topographic lines?
How To Read Contour Lines
- 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. …
- Supplementary lines appear as dotted lines, indicating flatter terrain.
What lines are called contour lines?
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. The diagram illustrates how contour lines show relief by joining points of equal elevation.
What are contour lines?
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. They're useful because they illustrate the shape of the land surface — its topography — on the map.
What is an index line?
Index lines are the thickest contour lines and are usually labeled with a number at one point along the line. This tells you the elevation above sea level. 2. Intermediate lines are the thinner, more common, lines between the index lines.
How do you draw topographic lines?
2:013:59How to Draw Contour Lines on a Map – YouTubeYouTube
What are longitude lines called?
Lines of longitude, also called meridians, are imaginary lines that divide the Earth. They run north to south from pole to pole, but they measure the distance east or west. Longitude is measured in degrees, minutes, and seconds.
What are lines of latitude and longitude called?
The lines running North to South are called "Meridians" or "lines of longitude" (Figure 2), while the lines running East to West are called "Parallels" or "lines of latitude" (Figure 3). Figure 2. Meridians or "Lines of Longitude" and degree readings for longitudes in increments of 30 degrees.
What are form lines in topography?
Definition of form line : a line drawn on a map to depict surface configuration in a generalized manner and usually without indicating elevations — compare contour line.
What are symbols on a map?
A symbol is an abstraction or pictorial representation of something else. Symbols on a map consist of discrete points, lines, or shaded areas; they have size, form, and (usually) color. Map symbols present information collectively, leading to appreciation of form, relative position, distribution, and structure.
What is a legend symbol?
Definition: A key or legend is a list of symbols that appear on the map. For example, a church on the map may appear as a cross, a cross attached to a circle, a cross attached to a square. A church symbol with a square means that the church has a tower, while a circle means the church has a spire.
How do you identify features on a topographic map?
Names of places and features are shown in a color cor- responding to the type of feature. Many features are identified by labels, such as “Substation” or “Golf Course.” Topographic contours are shown in brown by lines of different widths. Each contour is a line of equal elevation; therefore, contours never cross.
What are the five different types of topography?
Recognising topographic features
- Landforms: hills, valleys, gullies, ridges…
- Water courses: rivers, swamps, coastal…
- Vegetation: national parks, farmland, plantations…
- Manmade: buildings, roads, property boundaries, political boundaries…
When contour lines form closed circles This represents a?
Concentric circles indicate a hill. When contour lines form closed loops all together in the same area this is a hill. The smallest loops are the higher elevations and the larger loops are downhill. On the Stowe map which hill has an elevation of 1122 feet?
What are the 3 types of contour lines on a map?
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.
What is called contour?
Contour lines are lines drawn on a topographic map connecting points of equal elevation. They are also called “level- lines”. Contour lines are useful because they depict the shape of land used by countless professions- foresters, hunters,miners,engineers etc.
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.
What is a supplementary line on a map?
Supplementary contour lines are placed between regular contour lines to visualize small but important forms that regular contour lines are unable to show. On topographic maps, typical forms are hillcrests, depressions, saddles, terraces, banks, and levees.
What is a Isoline map?
Isolines are lines drawn on a map connecting data points of the same value. They are commonly used by geographers. Contour lines, for example, show relief and connect points on the map that have the same height.
What are index lines?
Index lines are the thickest contour lines and are usually labeled with a number at one point along the line. This tells you the elevation above sea level. 2. Intermediate lines are the thinner, more common, lines between the index lines. They usually don't have a number label.
Where is the meridian line?
Greenwich What is the meridian line? The meridian line in Greenwich represents the Prime Meridian of the world, Longitude Zero (0° 0' 0"). Every place on the Earth is measured in terms of its angle east or west from this line. Since 1884, the Prime Meridian has served as the reference point for Greenwich Mean Time (GMT).
What is the imaginary line called?
Imaginary lines, also called meridians, running vertically around the globe. Unlike latitude lines, longitude lines are not parallel. Meridians meet at the poles and are widest apart at the equator. Zero degrees longitude (0°) is called the prime meridian.