Question

a thematic map that uses different shades or colour to indicate average value

Answer 1

HI mate GM here is your answer...,

The first and most commonly used of these is the choropleth map. This is a map that portrays quantitative data as a colour and can show density, percent, average value or quantity of an event within a geographic area. Sequential colours on these maps represent increasing or decreasing positive or negative data values.

I hope it will help you and mark me as a brain list answer plz.

Answer 2

Answer:

A thematic map is  a map that shows the themes of the earth with a specific geographic area.

Explanation:

• Thus The thematic map tends to show a specific theme or area. That is related to a variety of phenomena like geological, political such as the coastlines, boundaries, and places.

• An important cartographic element of the thematic mapping is the quality and the quantity. The mapping method of the choropleth that uses colors or shades on the maps according to their proportions as each hue indicates a different phenomenon.

• Such as land-use changes can easily be shown on a choropleth map and these are shown with equal intervals of color hues from negative to positive.  

• Some examples of color values are the Value progression (light to dark), Qualitative color progression (light multi colors), Full-spectral color progression (multi-color),  Blended hue color progression and the Bipolar color progression (dark on two ends).