Maps are extremely important if you do not know where you are going. However, there are more than just road maps. Different types of maps can tell you different types of things. In class we learn about a couple of different types of maps and their functions.
Choropleth Map: a map that shows a certain thing for a state or region by assigning a different color shade that represents the amount of the thing the map is showing.
This choropleth map, to the right, shows the number of hazardous waste sites per each state in the U.S. The key at the bottom designates a color and the amount of hazardous waste sites that correspond to that color.
Dot Density Map: a map that uses dots to represent where something occurs. For example, the maps that Verizon uses in their commercials are examples of dot density maps.
The map to the left is a dot density map showing the locations of Florida's Citrus Production for a specific year. Each dot is equal to 200,000 boxes of citrus from the area the dot is located on the map.
Proportional Symbols Map: a map that indicates the amount of something by using a symbol and the symbol changes size to show the amount for a particular region.
The map to the right shows how many Wal-Marts there are for each state. The bigger the circle, the more the Wal-Marts located in the state.
Isopleth Map: an isopleth map is similar to a choropleth map, but it uses contour lines to show something instead of breaking the colors up by state or county.
The map to the left shows the average temperature for the U.S. during a certain time period. The lines show where the temperature occurs, as well as the different color that designates the average temperature.
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