Mapping Lab

Choropleth 

         Choropleth maps show some kind of  average in different areas. They show the averages by using different colors, shading, or symbols. The above map shows world oil consumption.

Dot Density

     Dot density maps show a specific geographical occurrence by placing identical dots on the map. The above map shows the distances between the nearest McDonald's.

Proportional Symbol Map

     Proportional symbol maps use the size of symbols to show the relative amount of something in a given area. The above map shows the proportional amount of Walmarts per state.

Isarithmic Map

      Isarithmic maps show continuous occurrences like precipitation and elevation.The above map shows both precipitation and temperatures for the U.S.

In order for maps to be easily understood, they must have several components: a title, a compass rose, a key, and a scale. These tools make sure the map is read correctly. Another common map is the elevation map. Elevation maps show a elevations in an area. Below is an elevation map for the area around my house. The elevation in the orange area is about 360 ft above sea level.