What is the contour interval of this topographic 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.
Similarly, What is the contour interval on a 1 50000 map? The standard method used by the OS when displaying relief at 1:50,000 scale is to use a mix of intermediate and index contours at 10 m intervals u2013 the index contour (every 50 m) represented by a heavier line weight.
How do you find a 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 is the contour interval of the map quizlet?
A contour line on a topographic map connects points of equal elevation. The change in elevation from contour line to contour line is called the contour interval.
What is a contour index?
Contour Index are bold and thicker lines that appear at an interval of every fifth contour line. The increase in the number associated with specific contour lines shows the elevation of the terrain is also increasing and vice versa.
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 the contour interval like on a map where the relief is high? If the relief is high (bigger change) you will need a bigger contour interval. The highest point on a topographic map is marked as 345m. The lowest contour line is at 200m.
What is meant by the contour interval on a topographic map quizlet?
Contour Interval. The difference between adjacent contour lines. Adjacent means next to. It is usually shown in or near the map’s legend. The difference in elevation between one contour line and the next.
What is a contour line on a topographic map quizlet? contour line. A line on a topographic map that connects points of equal elevation.
What do contour lines on a topographic map connect?
A topographic map with contour lines connecting places that are the same height above sea level. Numbers on the lines give the height in feet. (Sea level is zero.) Lines drawn closely together indicate that a slope is steep.
Do all topographic maps use the same contour interval? Different maps use different intervals, depending on the topography. If, for example, the general terrain is quite elevated, the map might run at 80- to even 100-foot (24- to 30-meter) intervals. This makes it easier to read the map — too many contour lines would be difficult to work with.
How do you read contours on a topographic map?
What is intermediate contour?
A contour line drawn between index contours. Depending on the contour interval there are three or four intermediate contours between the index contours.
What is contour explain 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 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 are the 3 factors that should be considered upon planning and designing of a contour interval to be used for a topographic map?
What are the 3 factors that should be considered upon planning and designing of a contour interval to be used for a topographic map?
- 1) Scale of the map. The contour interval is kept inversely proportional to the scale of the map. …
- 2) Purpose of the map. …
- 3) Nature of the ground. …
- 4) Availability of time and funds.
What is a contour interval Brainly? Brainly User. 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 is elevation shown on a topographic map intermediate contour index contours contour intervals contour lines?
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 the contour interval between the two index contours? 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 are contour lines quizlet?
Contour line. a line on a map joining points of equal height above or below sea level.
How do contour lines indicate streamflow on a topographic map? All rivers flow downhill from higher to the lower elevations, perpendicular to the contour line above it. As a rule of thumb, the V-shaped contour is pointing upstream (the opposite direction from the flow of a stream or river). The “V” shape contours indicate streams and drainage.
What is the contour interval in Figure 2?
Contour interval is the difference in elevation between two adjacent contour lines. In Figure 2-5, the contour interval is 40 feet.
How do you draw a contour line on a topographic map?
How must contour lines bend on a topographic map to indicate a stream valley?
A contour line that bends to form a V shape indicates a valley. The bend in the V points toward the higher end of the valley; this V points upstream, or in the direction from which the water flows, if there is a stream. Contour lines that form closed loops indicate a hilltop or a depression.