Quick Answer: What Is The Difference Between Contour Interval And Vertical Interval?

What is the difference between contour interval and horizontal equivalent?

Explain Terms Used in Contouring….What is the Difference Between Contour Interval and Horizontal Equivalent.S.NoContour IntervalHorizontal Equivalent3In a given map the contour interval is a constantThe horizontal equivalent varies with slope.

Closer distance indicates steep slope and wider distance gentle slope2 more rows.

What is the difference between contour interval and scale?

The contour interval is the vertical distance represented by consecutive contour lines on the map. In general, the smaller the scale of the map (remember, small scale maps show a larger area of the earth’s surface) the larger the contour interval will be.

Why is a contour interval important?

You choose a contour interval small enough to show things that are important to you, but not so small as to make the map illegible! … For an area with great relief, you use a large contour interval so that you don’t obscure all the features in a sea of contour lines!

How do you find the vertical interval?

To find the elevation interval between the contour lines, Divide the difference in elevation between the index lines by the number of contour lines from one index line to the next. In the example above, the distance 200 is divided by the number of lines, 5.

What is vertical interval?

Vertical Interval is the vertical distance between two contour lines. Horizontal Equivalent is the actual distance between two points on two contour lines.

What is the scale of the contour lines?

They are available in two standard scales: 1:50 000 and 1:250 000.

Why do contour lines never 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 is a vertical interval of the map?

vertical interval (plural vertical intervals) (cartography) The vertical distance on the ground which separates adjacent contour lines on a map.

What is a contour interval and on what factors does it depend?

Answer. Answer: 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.

What is contour height?

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. … The contour interval of a contour map is the difference in elevation between successive contour lines.

How many types of contour lines are there?

3 kindsThere are 3 kinds of contour lines you’ll see on a map: intermediate, index, and supplementary. 1. 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.

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 uses of contour map?

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.

What is the vertical interval of the orthophoto map?

The advantages of the 1:50 000 topographic map and vertical aerial photo are combined to draw an orthophoto map. An orthophoto map is therefore a vertical aerial photo on a lower level of 1:10 000, with contour lines added. Contour lines of 5 metres intervals are used in order to identify detail.

What is the contour interval of the map?

• Contour interval is always the same on a map. is the difference in elevation from one contour line to the next. For example, the contour interval on the map below is 10 feet. This means that the change in elevation between contour lines is always 10 feet.

What is the factors affecting contour interval?

FACTORS FOR DECIDING CONTOUR INTERVAL1) Scale of the map. The contour interval is kept inversely proportional to the scale of the map. … 2) Purpose of the map. The contour interval on a map also depends upon the purpose for which the map is to be utilized. … 3) Nature of the ground. … 4) Availability of time and funds.

What is meant by 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. If the numbers associated with specific contour lines are increasing, the elevation of the terrain is also increasing.

What 2 types of lines show elevation differences?

Contour lines are used to show elevation on a topographic map. Lines or isolines on a map that connect points with the same elevation. What does each contour line on a map show? Each contour line shows a different elevation.

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 are the characteristics 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.