What causes earthquakes? Earth's crust ranges from 3 to 45 miles deep (5 to 70 kilometers). The crust is a thin, hard shell that floats on the denser, hotter rock of the mantle.
Sponsored Topics. Airway Heights is a city in Spokane County, Washington, United States, just west of Spokane. The population was 6,114 at the 2010 census. The city's name was taken from its close proximity to Fairchild Air Force Base and Spokane International Airport. Airway Heights was officially incorporated on June 28, 1955.
Operated by the Metropolitan Washington Airports Authority, Dulles Airport occupies 13,000 acres (52.6 km2) straddling the Loudoun-Fairfax line. Most of the airport is in the unincorporated community of Dulles, in Loudoun County, with a small portion in the unincorporated community of Chantilly in Fairfax County. Dulles is the one of the three major airports in the larger BaltimoreâWashington metropolitan area with over 21 million passengers a year.