Ridley Park is a borough in Delaware County, Pennsylvania, United States. The population was 7,002 at the 2010 census. Ridley Park is the home of The Boeing Company's CH-47 Chinook helicopter division.[4]
10. Contaminated surface water can eventually enter groundwater and contaminate it. 11. Depending on the type of soil or rock, groundwater will flow at different rates. 12. Rain and snowmelt infiltrate (seep) into the ground to become groundwater. 1. False.
Lesson Summary. 1  Water flowing over Earthâs surface or underground causes erosion and deposition. 2  Water flowing over a steeper slope moves faster and causes more erosion. 3  How water transports particles depends on their size. 4  Runoff erodes the land after a heavy rain.