CESSWI Practice Questions With Complete Solutions

Erosion correct answer: process in which, by the actions of wind and/or water, soil particles detached and transported Sediment correct answer: eroded material suspended in wind or water Sedimentation correct answer: deposition of eroded material Types of Erosion correct answer: splash sheet rill gully channel Splash erosion correct answer: raindrop impact energy is enough to dislodge surface sediments sheet erosion correct answer: caused by rain splash detaching soil particles lifting them up and removing them by shallow "sheets" of water flowing down the sloped soil surface Rill Erosion correct answer: as flow concentrates, small channels begin to form in the soil surface Gully Erosion correct answer: Formed when runoff cuts rills deeper and wider or when flows from several rills come together and form a large channels Channel Erosion correct answer: may become unstable due to increased flows or changes in upstream sediment load Natural erosion correct answer: generally considered due to the influences of climate on the surface of the earth Accelerated erosion correct answer: natural erosion plus human activities What problems can accelerated erosion cause? correct answer: Unrestricted development removal of surface cover increased imperviousness poor stewardship Problems associated with construction related erosion correct answer: problems for down slope property owners