Maharashtra State Board course SSC (English Medium) Class 9

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Answer in Brief. Differentiate Between Choropleth and Isopleths Methods. - Geography and Economics

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ConceptDistributional Maps Isopleth Method


Answer in brief.

Differentiate between choropleth and isopleths methods.


Choropleth and Isopleth maps are two different forms of distributional maps that are used tor represent various geographical elements in a region. At first glance, they may look similar but the methodology behind them is completely different and they also utilize different data. The following table differentiates between the two methods.

  Choropleth method  Isopleth method 
1. The for different Geographical variables is represented by either shades of the same color or by different colors. The data for the variable under study is demarcated by isolines which are lines joining the places having the same value. 
2. Continuous or varying data can be used for maping purposes. Only continuous data is used.
3. Administrative boundaries define data boundary and hence continuous data may be misrepresented.   Administrative boundaries do not  define data boundary. Data boundary is defined by isolines.
4. Smallest and largest values of given data are usd to clasify the data range into acceptable calsses. Places having same data value determine the drawing of isolines. The range is determined by the difference in thses isolines. 
5. Color gradient or patterns allows map interpretation depper the color higher the value of data under study.  Placement of lines allows map interpretation, closer the isolines steeper the data distribution. 
6. Mainly used for data like population density, distribution etc.  Mainly used for continuous data live temperature, rainfall, altitude etc. 
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 Balbharati Solution for Balbharati Class 9 Social Science Geography (2019 to Current)
Chapter 1: Distributional Maps
Exercise | Q: 2.2 | Page no. 7
Solution Answer in Brief. Differentiate Between Choropleth and Isopleths Methods. Concept: Distributional Maps - Isopleth Method.
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