Question

explain isopleth maps in brief for class 9​

Answer 1

Answer:

Explanation:

Isopleth maps differ from choropleth maps in that the data is not grouped to a pre-defined unit like a city district. These maps can take two forms:

Lines of equal value are drawn such that all values on one side are higher than the "isoline" value and all values on the other side are lower, or

Ranges of similar value are filled with similar colours or patterns.

This type of map is ideal for showing gradual change over space and avoids the abrupt changes which boundary lines produce on choropleth maps. Temperature, for example, is a phenomenon that should be mapped using isoplething, since temperature exists at every point (is continuous), yet does not change abruptly at any point (like population density may do as you cross into another census zone). Relief maps should always be in isopleth form for this reason.

Isopleth example: precipitation 10th June 2000 (mm)

The disadvantage of isopleths are that they are unsuitable for showing discontinuous or 'patchy' distributions and a large amount of data is required for accurate drawing.