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.
Glenn Heights is the only suburb (except for Cockrell Hill, which is technically an enclave and not a suburb) in the southern half of Dallas County that is a member of Dallas Area Rapid Transit; it has been since DART's inception in 1983. The Glenn Heights Park & Ride Center serves the city.