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.
Union Gap is located in Yakima County, WA. The population is 6,003, making Union Gap the 7th largest city in Yakima County. There are 2 public schools in Union Gap with an average Homefacts rating of B-. The total crime rate for Union Gap is high, and there are 0 registered sex offenders residing in the city.