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.
What is the difference between each contour line called?
Two contour lines next to one another are separated by a constant difference in elevation (such as 20 ft or 100 ft). This difference between contour lines is called
the contour interval
. The map legend gives the contour interval.
What is the name for the elevation difference between?
ANSWER: The name for the elevation difference in between two adjacent contour lines is
contour interval
. EXPLANATION: Counter lines are the line on the map that is drawn between two places at same altitude from the sea level.
How do you determine the elevation of a point that falls between two contour lines?
The elevation of an unlabeled contour line can be determined by knowing the contour interval and looking at adjacent contour lines. The elevation of a point located in between two contour lines can be estimated by
interpolating between the lines
.
What do contour lines show in elevation?
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
. … Numbers on the lines give the height in feet. (Sea level is zero.) Lines drawn closely together indicate that a slope is steep.
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 3 types of contour lines?
Contour lines are of three different kinds. They are
the Index lines, Intermediate lines and the Supplementary lines
.
What do topographic maps show us?
Topographic maps are
a detailed record of a land area
, giving geographic positions and elevations for both natural and man-made features. They show the shape of the land the mountains, valleys, and plains by means of brown contour lines (lines of equal elevation above sea level).
Do steep contour lines indicate water?
The area of the map above boxed in orange shows an area that has a fairly steep slope, while the area boxed in purple is a relatively flat area. Contour lines on the map
also show how water will travel across the land
. Contours that form a V can you tell which direction water will flow.
What is the zero contour line?
Elevation. Is the difference in value between two contour lines.
Sea Level
. is the zero contour line.
What is the distance between two contour lines called?
Untitled Document. The difference in elevation between successive contour lines on a given map is fixed. This vertical distance between any two contour lines in a map is called
the contour interval (C.I.) of
the map.
What two types of lines show elevation differences answer choices?
Topographic maps have
contour lines
that connect points of identical elevation above sea level. Contour lines run next to each other. Adjacent contour lines are separated by a constant difference in elevation, usually noted on the map. Topographic maps have a horizontal scale to indicate horizontal distances.
What is the distance between two contour lines?
It facilitates depiction of the relief of terrain in a two dimensional plan or map. The difference in elevation between successive contour lines on a given map is fixed. This vertical distance between any two contour lines in a map is called
the contour interval (C.I.) of
the map.
How do you calculate contour lines?
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.
How do you get contour lines?
The two ways to establish a contour map are
the cross-section method and the trace contour method
. To use the cross-section method, set a control or reference line at the center of the lot, then lay out and stake a grid; the elevation is determined at each stake in the grid relative to a benchmark.
What is the elevation of the lowest contour line?
The lower index contour line is numbered
500
, which means any point on that line is at an elevation of 500 meters above mean sea level. The upper index contour line is numbered 600, or 600 meters.
