Sedimentation and erosion control certification questions with complete solutions

Erosion correct answer: is the process by which land surface is worn away by the action of wind, water, and gravity. Sedimentation correct answer: is the settling of soil particles Soil erosion is classified as either ____ erosion or ____ erosion correct answer: wind , water Water erosion can be classified as either ______ erosion or _____ erosion correct answer: overland , stream Four processes of overland erosion correct answer: splash erosion, sheet erosion, rill erosion, gully erosion Four principle factors influencing soil erosion are correct answer: soil characteristics, vegetative cover, topography, climate Physical effects of erosion and sedimentation correct answer: increase flooding, reduce hydraulic capacity, increased maintenance of storm water systems, increased water treatment costs, decreased recreational value Biological effects of erosion and sedimentation correct answer: reduced light for aquatic plants, clogs fish gills, impairs spawning, disrupts food chain, blankets bottom, disrupts ecosystem Minimize the _______ of the area exposed at one time and the ______ of exposure correct answer: extent, duration Apply __________ practices to protect the disturbed area from off-site runoff and to protect off-site areas from sediment damage correct answer: perimeter control Apply ________ practices to prevent excessive on site damage correct answer: erosion control