Contour line - Wikipedia
A contour line (also isoline, isopleth, isoquant or isarithm) of a function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value. [1][2] It is a plane section of the three-dimensional graph of the function parallel to the -plane.
Contour line | Topography, Mapping, Surveying | Britannica
5 days ago · 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. Imagine a land surface inundated by the sea to a depth of 100 feet (30.5 metres)—that is, the intersection of …
What are Contour Lines? | How to Read a Topographical Map 101
Feb 5, 2022 · Other than the obvious trails and rivers, these squiggly lines are contour lines. 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.
What Are Contour Lines on Topographic Maps? - GIS Geography
For a quick definition, a contour line joins points of equal and constant values. For example, contours on an elevation have constant heights that are the same on each line in a topographic map . Are there contour lines mountains or depressions?
Contour line Definition & Meaning - Merriam-Webster
Oct 25, 2024 · The meaning of CONTOUR LINE is a line (as on a map) connecting the points on a land surface that have the same elevation.
What Are Contour Lines and Why Are They Important?
Aug 10, 2021 · Contour lines are continuous lines that connect points of equal elevation on a map. They are created by connecting points of equal elevation, which means that they will never cross each other. They can come near to each other at some point but never crosses each other.
7.3: Contour Lines - Geosciences LibreTexts
Aug 24, 2024 · Contour lines are what allow topographic maps to show the three-dimensional configuration (i.e., topography) of the Earth’s surface. Sea level is accepted worldwide as the zero contour line, so that elevation measurements are given in terms of either feet or meters above or below sea level.
What are the 7 rules of contour lines? - Geographic Pedia - NCESC
Jun 23, 2024 · Contour lines are essential for creating accurate topographic maps, which are used by hikers, mountaineers, and outdoor enthusiasts to navigate through terrain. These lines represent points of equal elevation and provide valuable information about the slope, shape, and features of the land.
Learn all about contour lines | OS GetOutside
Jun 5, 2022 · Learn the use and meaning of contour lines on a map and understand how to use them to when you’re out and about or planning routes. Understanding contours will improve your map reading skills. Hills, slopes and mountains are represented on a map using contour lines.
Topographic Maps | Earth Science - Lumen Learning
A contour line is a type of isoline; in this case, a line of equal elevation. If you walk along a contour line you will not go uphill or downhill. Mathematically, a contour line is a curve in two dimensions on which the value of a function f (x, y) is a constant. Contour Lines and Intervals.
- Some results have been removed