Continental Drift, Sea Floor Spreading and Plate Tectonics. Tectonic Theories. Tectonic theories attempt to explain why mountains, earthquakes, and volcanoes occur where they do, the ages of deformational events, and the ages and shapes of continents and ocean basins.
Sterling, Connecticut. Sterling is a town in Windham County, Connecticut, United States. The population was 3,099 at the 2000 census.
Sterling, Illinois. Sterling is a city in Whiteside County, Illinois, United States. The population was 15,370 at the 2010 census, down from 15,451 in 2000. Formerly nicknamed The Hardware Capital of the World, Sterling has long been associated with manufacturing and the steel industry.