Table of Contents
What information do the contour lines give the map reader?
Explain to students that these are imaginary lines that join points of equal elevation, and that they allow you to read the shape of the Earth’s surface. Tell students that by reading contour lines, they can measure the steepness of a hill, the height of a mountain, and even the depth of a lake or ocean.
What does a contour map measure?
Contour Lines: Contour lines are used to determine elevations and are lines on a map that are produced from connecting points of equal elevation (elevation refers to height in feet, or meters, above sea level).
What is the contour interval and how do you determine it?
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 meaning of contour interval?
A contour interval is the vertical distance or difference in elevation between contour lines. If the numbers associated with specific contour lines are increasing, the elevation of the terrain is also increasing. If the numbers associated with the contour lines are decreasing, there is a decrease in elevation.
What is the contour interval in the given map?
A contour line is a line drawn on a topographic map to indicate ground elevation or depression. 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 contour interval of 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.
How do you find the contour interval on the map?
Instructions Examine a topographic map. Look for the index contours. Write down the elevations of two consecutive index contours. For example, the index contours may have elevations of 500 feet and 600 feet respectively. Count the number of contour lines between these same two index contours.
How do you find the contour interval?
To calculate contour intervals, find the elevation difference between two adjacent index lines or index contours. Divide that elevation difference by the number of contour intervals between index lines (usually five). The result equals the contour interval.
How to calculate a contour interval?
As with counting from one number to the next,
What are the different types of contour lines on a map?
Isopleth. Isopleth on a contour map connects the places having the same value of some measurable quantity of geographical or meteorological phenomena.