Geologic Maps are unique in that they show the distribution of geologic features on a landscape through specific symbols and colors. The United States Geological Survey's (USGS) site Geologic Maps provides visitors with a good introduction to these concepts, which include the unique features of a geologic map; the meaning of their lines, colors, and symbols; the location of faults; and more....

Chock full of information about water, the US Geological Survey's (USGS) Water Science for Schools is an enjoyable site for educators and students alike. From Water Basics to Special Topics, this easily navigable site teaches students about the importance of water in their everyday lives. Visitors confused about terminology can refer to the glossary, a tool that defines terms used within the site...