Question
Choropleth maps are used to show altitudes.

Answer

Wrong.
Isopleth maps and not the choropleth maps are used to show altitude.
  • When the distribution of a variable is continuous like the altitude, the isopleth method map is used.
  • Isopleth maps use lines joining the locations having equal values and hence are useful to show the change in altitude in the region.
  • When the distribution of a variable is discontinuous, the choropleth method map is used to show its distribution, eg. distribution of population, domestic animals, etc.

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