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.
Homefacts City Report. Mount Airy is located in Frederick County, MD. The population is 9,198, making Mount Airy the 4th largest city in Frederick County. There are 4 public schools in Mount Airy with an average Homefacts rating of A. The total crime rate for Mount Airy is very low, and there are 15 registered sex offenders residing in the city.