This depends entirely on how close they are, and what number they have written on them.
Sometimes they can be minimal distances apart, in which case they're liable to be quite a substancial gap between the 2 lines, in comparison to them being 4 centimetres apart on the map, in which case it would be a very minimal rise/decline.
Contour interval.
Contour interval
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.
Relief.
The difference between an outline and a contour line is location. An outline is used to draw the outermost form on an object, while a contour line is used to depict details inside the form of an object.
the elevation difference between two adjacent contour lines.
the contour interval is the difference in elevation between contour lines that are next to each other
The Contour Interval.
The difference in elevation between the highest and lowest contour lines on a topographical map is called a contour interval.
Contour interval.
Contour interval
contour interval
Every point on a given contour line is at the same elevation. Neighboring contour lines are at different elevations.
Contour interval
Contour line connect points of equal elevation on a map, whereas relief is the difference in elevation from the highest and lowest on a map.
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