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.
District Heights is an incorporated city in Prince George's County, Maryland, United States, located near Maryland Route 4. The population was 5,837 at the 2010 census. For more information, see the separate articles on Forestville, Maryland and Suitland. District Heights is 9.85 miles (15.85 km) away from central Washington, DC. District Heights is located at 38Â°51â²34â³N 76Â°53â²21â³W / 38.85944Â°N 76.88917Â°W / 38.85944; -76.88917 (38.859545, â76.889139).