Acontour line (also level set, isopleth, isoline, isogram or isarithm) of a function of two variables is a curve along which the function has a constant value.[1] In cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level.[2] A contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness of slopes.[3] The contour interval of a contour map is the difference in elevation between successive contour lines.[4] A contour interval is basically the same thing.
A cladogram is a diagram used in cladistics which shows relations among organisms. A cladogram is not however an evolutionary tree because it does not show how ancestors are related to descendants or how much they have changed; many evolutionary trees can be inferred from a single cladogram. A cladogram uses lines that branch off in different directions ending at groups of organisms. There are many shapes of cladograms but they all have lines that branch off from other lines. The lines can be traced back to where they branch off. These branching off points represent a hypothetical ancestor (not an actual entity) which would have the combined traits of the lines above it. This hypothetical ancestor might then provide clues about what to look for in an actual evolutionary ancestor. Although traditionally such cladograms were generated largely on the basis of morphological characters, DNA and RNA sequencing data and computational phylogenetics are now very commonly used in the generation of cladograms.
strepto - means lines coccus - means spherical all bacteria are named due to their appearance
Identifying Information, Trade Lines, Credit Inquiries, and Public Record and Collection Items
Identifying Information, Trade Lines, Credit Inquiries, and Public Record and Collection Items
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countour intervals
contour intervals
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Those lines representing elevation on a map are called contour lines. The difference in elevation between two of these lines is called the contour interval. Different maps use different contour intervals based on the scale of the map, or in other words, the size of the contour interval is based on how zoomed in and detailed the map is. Sometimes a map will have darker and thicker contour intervals. This is called the Index Contour Interval. Index contour intervals appear less frequently and represent a larger elevation change. It helps you figure out the amount of a large elevation difference faster because usually they are multiples of 100 or 1000, making them easier to add up.
Those lines representing elevation on a map are called contour lines. The difference in elevation between two of these lines is called the contour interval. Different maps use different contour intervals based on the scale of the map, or in other words, the size of the contour interval is based on how zoomed in and detailed the map is. Sometimes a map will have darker and thicker contour intervals. This is called the Index Contour Interval. Index contour intervals appear less frequently and represent a larger elevation change. It helps you figure out the amount of a large elevation difference faster because usually they are multiples of 100 or 1000, making them easier to add up.
contour lines
If the contour interval is not given, find two reference (labeled) contour lines and find the number of lines between them, excluding the reference lines themselves. Then the interval can be found using the following formula: |(Difference between elevation of reference lines)| /(Number of contour lines between reference lines +1) = Contour interval For example, if you find two reference lines labeled 150m and 250m and there is one contour line between them, then |150m-250m|/(1+1)=100m/2=50m The contour interval of that map is 50 meters.
index contour lines have numbers contour lines dont
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.
Most likely you says about contour interval. It's the difference in height between two sequential contour lines. For example, if the contour interval is 50 meters and some contour line corresponds 2000m above sea level, the next contour uphill was at 2050m then 2100m etc. Different maps use different intervals. It depends on map scale and terrain type (for mountain areas intervals are higher than for plains). The contour interval is shown on the map collar (typically near the scale).
The darker contour lines on map are called index contour lines. Numbers that indicate elevations are often written on these lines.
Hachured contour lines are contour lines with ticks pointing downslope that indicate a depression on a topographic map.