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contour lines
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∙ 13y ago
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Why can't two contour lines overlap?
One contour can not cross another because a contour is one exact elevation; if it crossed another contour it would show that it is higher than the second contour on one side, but lower on the other side.
The change in elevation from one contour line to the next is called what?
The change in the elevation between isolines is called a contour line. Contour lines on a topographical map resemble a volcano.
Do closely spaced contour line indicate a steep slope or gradual slope why?
Contour lines are used to indicate elevation, and are most commonly used on topographical maps. On a topographical map, each contour line indicates a particular elevation, the value of which is determined by a scale indicated on the map. Each contour line might, for example, indicate a rise of 20 feet. The closer the contour lines are to one another, the steeper the slope, since the rise in feet remains constant. Ultimately, as in the case of a nearly vertical cliff, the contour lines can become so closely packed together that they appear as a solid band.
What are contour intervals?
Contour lines were first used in the Schiehallion Experiment. This was an experiment designed to find the mass of a mountain, and by calculation, the mass of the Earth!!Contour lines were invented by Charles Hutton, in 1774, as a method of determining (in that case) the volume of the mountain.They are now commonly shown on topographic maps as a method of indicating the shape of the land and the depths of lakes and the sea. The intervals vary according to the need of the map, but common 1:50 000 maps have then indicated every 20 m, with the 100m lines shown slightly bolder.
How are isobars used?
in graphs to indicate lines of equal pressureIsobars show wind speed. The closer the isobars are spaced - the stronger the wind is.
What do elevation maps use to show elevation?
Maps can show elevation with contour lines
What are lines used to show elevation?
They are called contours.
What is used on a topographic map to show elevation?
relief contour lines blue lines an opencircle
What type of map will help you read elevation?
A contour map, shows lines of equal elevation which look like tree rings all over the map, and is used to show elevation as well as slope and gradient information. The closer the lines are together, the steeper the terrain is in relative terms.
What kind of map show is different levels of elevation?
Contour lines show elevation differences on topographic maps. On other maps, a coloured grid can show changes in elevation (these are called digital elevation models or DEMs).
What is a index contour?
A thicker line that has numbers written on it showing the rising or decreasing elevation on a topographic map By Ash Every fifth contour line on a topographic map, usually thicker, used to label elevation.
What type of map shows relief?
"Relief" is a word describing the variation in height of different points on the land surface. The variations in height are usually displayed as differing contour lines (lines linking points of equal height).Maps of this type are commonly referred to as topographic or relief maps.See link.
What are contour lines used for?
Contour lines enable us to see changes in elevation using an overhead map
What does the surface of a calm lake have in common with a contour line?
Contour lines are used in Topography to show the elevation of the land on a map. When looking at a map the contour lines look very similar to how a calm lake would appear.
What are conour lines?
Contour lines are used when you have spatial data, with the x,y values identifying a particular point and z is the value at that point. It could be elevation above sea level, temperature, pressure or any other measurable property. Contour lines identify where the data suggests equal values should exist. On an elevation map, contour lines show the elevation of equal values points. A 50 ft contour line would go through all points where the data suggest should be at 50 ft elevation. See related links.
Why can't two contour lines overlap?
One contour can not cross another because a contour is one exact elevation; if it crossed another contour it would show that it is higher than the second contour on one side, but lower on the other side.
Can a contour line on a topographic map connect a point with an elevation of 100 feet to a point with an elevation of 110 feet?
No. Contour lines connect points of the same elevation
