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
How do you find the contour interval?
What Is the Contour Interval Equal To? 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 The contour interval is equal to 200 / 5 = 40, or 40-unit contour intervals
What are the contour interval units?
The contour interval is the difference in elevation between adjacent contour lines First, the legend or information around the rim of the map may say something like “contour interval = 20 feet” or “contour interval = 20 meters” Maps that use units of feet for elevation may mark contour lines with units such as 400′
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 is a contour interval quizlet?
contour interval the difference in altitude represented by the space between two contour lines on a map any of the spaces between vertical lines on a topographic map or globe Contour line a line on a map joining points of equal height above or below sea level
What is the contour interval of this map?
Individual contour lines on a topographical map are a fixed interval of elevation apart known as a contour interval Common contour intervals are 5, 10, 20, 40, 80, or 100 feet The actual contour interval of a map depends upon the topography being represented as well as the scale of the map
What is the contour interval Quizizz?
The Contour Interval (CI) is the difference in elevation from one contour line to the next Usually, every line isn’t marked so you have to determine the CI yourself
What is a contour interval and on what factors does it depend?
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 interval apex?
The contour interval (how many meters or feet there are between adjacent contour lines) remains the same over a map, unless exceptions are noted in the legend Contour lines form a V-pattern crossing streams The “V” always points upstream, and its apex is always in the stream channel
What is the contour interval of the 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 Even names of places, railway lines and roads are shown on the photo
What is the difference between contour interval and horizontal equivalent?
Contour Interval: The constant vertical distance between two consecutive contours is called the contour interval Horizontal Equivalent: The horizontal distance between any two adjacent contours is called as horizontal equivalent while the horizontal equivalent is variable and depends upon the slope of the ground
What is contour topographic map?
noun a topographic map on which the shape of the land surface is shown by contour lines, the relative spacing of the lines indicating the relative slope of the surface
How do you read contour levels?
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 are the methods of contouring?
There are basically 2 methods of contouring – Direct Method and Indirect Method Direct Method of Contouring : High degree of precision is required for large-scale maps with small contour interval Indirect Method of Contouring : It is suitable for undulated ground and hilly areas
What is intermediate contour?
Contour lines (thinner lines) between index contours are called intermediate contour lines In the map shown below, the elevation difference between index lines is 100 meters The elevation difference or vertical distance between two adjacent contour lines would be 20 meters (100 : 5 = 20)
What is a contour line 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 map: contour lines The diagram illustrates how contour lines show relief by joining points of equal elevation
Why is an index contour important?
Index contours help the map reader get a better feel for the topography of an area Every 100 ms above sea level, the contour is a darker, thicker brown and is also labelled with the elevation, while the others are lighter, thinner and have no label
What is a contour interval on a topographic map quizlet?
The change in elevation from contour line to contour line is called the contour interval such as 1,600 or 2,000 feet
What do contour intervals on a topographic map show quizlet?
What is the contour interval on a map based on? The relief in the area The difference in elevation between the highest and lowest points in the area on the map
What is a contour line in art quizlet?
Contour Lines Lines that surround and define the edges of a subject, giving it shape and volume Lines that define the outer edges of forms and surface within a form, such as shapes, wrinkles, and folds used in contour lines drawing to suggest depth in addition to height and width