What is the different characteristics of contour lines?
Other characteristics of contour lines are: – Horizontal distance between contour lines is inversely proportional to slope. – Uniform slopes have uniformly spaced lines. – Along plane surfaces, contour lines are straight and parallel. – Contour lines are perpendicular to lines of steepest slopes.
What are contour lines definition for kids?
Contour lines are curved or straight lines on a map describing the intersection of a real or hypothetical surface with one or more horizontal planes. The configuration of these contours allows map readers to infer relative gradient of a parameter and estimate that parameter at specific places.
What 3 basic features of a landform do contour lines show?
Contour Lines and Intervals. Contour lines connect all the points on a map that have the same elevation and therefore reveal the location of hills, mountains, and valleys.
What is contour lines and what are its characteristics?
A contour line is an imaginary line which connects points of equal elevation. Such lines are drawn on the plan of an area after establishing reduced levels of several points in the area. The contour lines in an area are drawn keeping difference in elevation of between two consecutive lines constant.
What are contour lines easy?
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.
What are contour lines ks2?
These are lines that show high and low areas of land. The contour lines join up areas of the same height, and when they are close together it means the hill or mountain is steep. When they are far apart it means the land is gently sloping, or undulating.
What are the 3 factors that should be considered upon planning and designing of a contour interval to be used for a topographic map?
The Contour Spacing Depends On The Following Factors:
- The Scale of The Map. The contour interval is inversely proportional to the scale of the map.
- Nature of The Ground.
- Purpose and Expansion of the survey work.
- Time available and Eligible Expenses for field and office work.
What are some unique things about 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 also describe the methods of interpolation of contours?
Characteristics of Contour Line : All the points on a contour line have the same elevation. The elevations of the contours are indicated or printed close to the contour. When no value is present it indicates a flat terrain.
What are the characteristics of contour line Explain with neat sketch where required?
Contour line is closer near the top of a hill or high ground and wide apart near the foot. This indicates a very steep slope toward the peak and flatter slope toward the foot. 2. Contour line is closure near the bank of a pond or depression and wide apart toward the centre.
What characteristic of contour lines indicates steep terrain?
Closely spaced contour lines indicate a steep slope (Figure F-1). 2. Widely spaced contour lines indicate a gentle slope (Figure F-2).
When to use a contour line for kids?
Contour line. KidzSearch Safe Wikipedia for Kids. Contour lines or isolines are used when plotting a function. All the points where the function has the same value are connected. Two well-known examples, where such lines are commonly are height lines on topographical maps, and showing areas with the same pressure or temperature on weather charts.
What are the different types of contour drawings?
Contour drawings use no shading, but lighter and darker tonal areas can be “suggested” by varying line width and pressure. Darker, thicker lines can be used in shadow areas, and lighter, thinner lines in lighter areas. Cross contour lines are drawn lines which travel, as the name suggests, across the form.
What happens when contour lines cross each other?
If contour lines cross each other, it shows existence of overhanging cliffs or a cave. The steepest slope of terrain at any point on a contour is represented along the normal of the contour at that point. Contours do not pass through permanent structures such as buildings.
What is the elevation of a contour line?
For each line above this index line, elevation increases 50 feet. Therefore, the interval line in question is at 1,150 feet above sea level. After reading contour lines on a map for a while, you’ll notice that a few distinct shapes pop again and again.