South Pass, Wyoming - 30x60 Minute USGS Topographic Map Science Projects and biota of the Great

and biota of the Great Salt Lake

natural features

amphibians

the state is a natural museum of the great age of dinosaurs

Over 600 high-quality photographs highlight over 500 rock or mineral's distinguishing features

South Pass, Wyoming - 30x60 Minute USGS Topographic Map Science Projects and biota of the GreatThe distinctive characteristic of a topographic map is that the shape of the Earth's surface is shown by contour lines. Contours are imaginary lines that join points of equal elevation on the surface of the land above or below a reference surface, such as mean sea level. Contours make it possible to measure the height of mountains, depths of the ocean bottom, and steepness of slopes. A topographic map shows more than contours. The map also includes