3 Map Types

This first map is an isarithmic map showing the average annual temperatures of the United States. Isarithmic maps are used a lot as weather maps to show temperature, rainfall etc.

This next map is a choropleth map showing all the hay grown in the United States in the year 2002. Choropleth maps are used mostly to show density such as in population and per-capita income.

The final map here is a dot density map showing the statewise population of the United States in 1999. Dot density maps use circles or "dots" to show the presence of something, either a feature or population.