OPERATOR EXAMS QUESTIONS AND
ANSWERS
Erosion is the process where soil particles are ______________ or ____________ and put
sq sq sq sq sq sq sq sq sq sq sq sq
in motion. (Unit 1) - ans-Dislodged; detached
sq sq sq sq sq sq sq
Sedimentation is the process whereby detached particles are ___________________ els sq sq sq sq sq sq sq sq sq
ewhere. (Unit 1) - ans-Deposited sq sq sq sq
Sediment is solid ________________ or _______________ particulate matter that has be
sq sq sq sq sq sq sq sq sq sq
en removed from its site of origin by ___________, _____________, or ______________
sq sq sq sq sq sq sq sq sq sq sq sq
and deposited elsewhere. (Unit 1) - ans-Mineral; organic; water; wind; gravity
sq sq sq sq sq sq sq sq sq sq
Accelerated erosion is a speeding up of erosion due to ___________activity. (Unit 1) - ans-
sq sq sq sq sq sq sq sq sq sq sq sq sq sq
Human
Major erosive forces are water and ___________. (Unit 1) - ans-Wind
sq sq sq sq sq sq sq sq sq sq
In some areas, more soil is lost from ______________ erosion than from water erosion. (U
sq sq sq sq sq sq sq sq sq sq sq sq sq sq
nit 1) - ans-Wind
sq sq sq
The effects of _____________ erosion are usually more visible than _____________ erosi
sq sq sq sq sq sq sq sq sq sq sq
on. (Unit 1) - ans-Water; wind
sq sq sq sq sq
The three categories of overland erosion are: (Unit 1) - ans-Sheet, rill, gully
sq sq sq sq sq sq sq sq sq sq sq sq
_____________ erosion is the removal of a uniform layer of soil from rain- sq sq sq sq sq sq sq sq sq sq sq sq
splash and storm water runoff. (Unit 1) - ans-Sheet
sq sq sq sq sq sq sq sq
The ____________ of erosion defines the difference between rills and gullies. (Unit 1) -
sq sq sq sq sq sq sq sq sq sq sq sq sq
ans-Depth
sq
The physical factors affecting erosion are: (Unit 1) - ans-
sq sq sq sq sq sq sq sq sq
Climate, vegetative cover, soils, slope. sq sq sq sq
Erosion and sedimentation may cause: sq sq sq sq
-Loss of ___________ _______________
sq sq sq
, -__________________ damage to roads, buildings or bridges. sq sq sq sq sq sq
-
___________________, resulting in reduction of fish _______________ _________, redu sq sq sq sq sq sq sq sq
ced _____________ or _______________ _______________ capacity, and __________
sq sq sq sq sq sq sq
____ costs to maintain ______________.
sq sq sq sq
-_________________ loading. (Unit 1) - ans-- fertile topsoil sq sq sq sq sq sq sq
- Structural
sq
- Deposition; spawning areas; channel; storm drain; increased; turbidity
sq sq sq sq sq sq sq sq sq
- Pollutant
sq
The climatic factors that strongly influence erosion and runoff are _______________ amou
sq sq sq sq sq sq sq sq sq sq sq
nt, _______________, and ________________. (Unit 1) - ans-
sq sq sq sq sq sq sq
Rainfall, frequency, intensity. sq sq
Soil properties influencing erodibility include: (Unit 1) - ans-
sq sq sq sq sq sq sq sq
Texture, structure, cohesion, natural drainage classsq sq sq sq sq
Texture refers to the ___________ or _____________________ of ____________ of soil
sq sq sq sq sq sq sq sq sq sq sq
particles in soil. (Unit 1) - ans-Size; combination of sizes
sq sq sq sq sq sq sq sq sq
Structure refers to the degree to which individual soil particles _____________ to each oth
sq sq sq sq sq sq sq sq sq sq sq sq sq
er. (Unit 1) - ans-Adhere
sq sq sq sq
Slope _________________, _____________________, and ___________________ aff
sq sq sq sq sq
ect erodibility. (Unit 1) - ans-Steepness, length, and roughness.
sq sq sq sq sq sq sq sq
Sediment deposition occurs when soil- sq sq sq sq
laden wind or water ____________ enough to allow the soil particles to settle out. (Unit 1) -
sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq
ans-Slows
sq
The ____________, _______________, and ________________ of the transported partic
sq sq sq sq sq sq sq sq
les influence the rate at which they settle out. (Unit 1) - ans-Size, shape, and density.
sq sq sq sq sq sq sq sq sq sq sq sq sq sq sq
Smaller, lighter particles such as __________________ particles are easily transported an
sq sq sq sq sq sq sq sq sq sq
d are _____________________ to settle out. (Unit 1) - ans-Clay-sized; slow/difficult
sq sq sq sq sq sq sq sq sq sq
The Five Principles of Erosion and Sedimentation Control are:
sq sq sq sq sq sq sq sq
-____________ the development to fit the natural site conditions sq sq sq sq sq sq sq sq
-Expose the ________________ practical area for the _________________ possible time
sq sq sq sq sq sq sq sq sq
-Apply __________ _________________ prevention practices as first life of defense
sq sq sq sq sq sq sq sq sq
-Apply ___________________ control practices to prevent off-site sedimentation
sq sq sq sq sq sq sq
-
Implement a thorough __________________, ___________________, and __________
sq sq sq sq sq sq
___________ program. (Unit 1) - ans-- Plan sq sq sq sq sq sq
- Smallest; shortest
sq sq
- Soil erosion
sq sq