Certified Storm Water Operator Exam
Q&A 100% Solved | Graded A+
Erosion is the process where soil particles are ______________ or
____________ and put in motion. (Unit 1) - ✔✔Dislodged; detached
Sedimentation is the process whereby detached particles are
___________________ elsewhere. (Unit 1) - ✔✔Deposited
Sediment is solid ________________ or _______________ particulate
matter that has been removed from its site of origin by ___________,
_____________, or ______________ and deposited elsewhere. (Unit 1) -
✔✔Mineral; organic; water; wind; gravity
Accelerated erosion is a speeding up of erosion due to
___________activity. (Unit 1) - ✔✔Human
Major erosive forces are water and ___________. (Unit 1) - ✔✔Wind
In some areas, more soil is lost from ______________ erosion than from
water erosion. (Unit 1) - ✔✔Wind
The effects of _____________ erosion are usually more visible than
_____________ erosion. (Unit 1) - ✔✔Water; wind
1
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
,The three categories of overland erosion are: (Unit 1) - ✔✔Sheet, rill, gully
_____________ erosion is the removal of a uniform layer of soil from rain-
splash and storm water runoff. (Unit 1) - ✔✔Sheet
The ____________ of erosion defines the difference between rills and
gullies. (Unit 1) - ✔✔Depth
The physical factors affecting erosion are: (Unit 1) - ✔✔Climate, vegetative
cover, soils, slope.
Erosion and sedimentation may cause:
-Loss of ___________ _______________
-__________________ damage to roads, buildings or bridges.
-___________________, resulting in reduction of fish _______________
_________, reduced _____________ or _______________
_______________ capacity, and ______________ costs to maintain
______________.
-_________________ loading. (Unit 1) - ✔✔- fertile topsoil
- Structural
- Deposition; spawning areas; channel; storm drain; increased; turbidity
- Pollutant
2
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
, The climatic factors that strongly influence erosion and runoff are
_______________ amount, _______________, and ________________.
(Unit 1) - ✔✔Rainfall, frequency, intensity.
Soil properties influencing erodibility include: (Unit 1) - ✔✔Texture,
structure, cohesion, natural drainage class
Texture refers to the ___________ or _____________________ of
____________ of soil particles in soil. (Unit 1) - ✔✔Size; combination of
sizes
Structure refers to the degree to which individual soil particles
_____________ to each other. (Unit 1) - ✔✔Adhere
Slope _________________, _____________________, and
___________________ affect erodibility. (Unit 1) - ✔✔Steepness, length,
and roughness.
Sediment deposition occurs when soil-laden wind or water ____________
enough to allow the soil particles to settle out. (Unit 1) - ✔✔Slows
The ____________, _______________, and ________________ of the
transported particles influence the rate at which they settle out. (Unit 1) -
✔✔Size, shape, and density.
3
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
Q&A 100% Solved | Graded A+
Erosion is the process where soil particles are ______________ or
____________ and put in motion. (Unit 1) - ✔✔Dislodged; detached
Sedimentation is the process whereby detached particles are
___________________ elsewhere. (Unit 1) - ✔✔Deposited
Sediment is solid ________________ or _______________ particulate
matter that has been removed from its site of origin by ___________,
_____________, or ______________ and deposited elsewhere. (Unit 1) -
✔✔Mineral; organic; water; wind; gravity
Accelerated erosion is a speeding up of erosion due to
___________activity. (Unit 1) - ✔✔Human
Major erosive forces are water and ___________. (Unit 1) - ✔✔Wind
In some areas, more soil is lost from ______________ erosion than from
water erosion. (Unit 1) - ✔✔Wind
The effects of _____________ erosion are usually more visible than
_____________ erosion. (Unit 1) - ✔✔Water; wind
1
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
,The three categories of overland erosion are: (Unit 1) - ✔✔Sheet, rill, gully
_____________ erosion is the removal of a uniform layer of soil from rain-
splash and storm water runoff. (Unit 1) - ✔✔Sheet
The ____________ of erosion defines the difference between rills and
gullies. (Unit 1) - ✔✔Depth
The physical factors affecting erosion are: (Unit 1) - ✔✔Climate, vegetative
cover, soils, slope.
Erosion and sedimentation may cause:
-Loss of ___________ _______________
-__________________ damage to roads, buildings or bridges.
-___________________, resulting in reduction of fish _______________
_________, reduced _____________ or _______________
_______________ capacity, and ______________ costs to maintain
______________.
-_________________ loading. (Unit 1) - ✔✔- fertile topsoil
- Structural
- Deposition; spawning areas; channel; storm drain; increased; turbidity
- Pollutant
2
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
, The climatic factors that strongly influence erosion and runoff are
_______________ amount, _______________, and ________________.
(Unit 1) - ✔✔Rainfall, frequency, intensity.
Soil properties influencing erodibility include: (Unit 1) - ✔✔Texture,
structure, cohesion, natural drainage class
Texture refers to the ___________ or _____________________ of
____________ of soil particles in soil. (Unit 1) - ✔✔Size; combination of
sizes
Structure refers to the degree to which individual soil particles
_____________ to each other. (Unit 1) - ✔✔Adhere
Slope _________________, _____________________, and
___________________ affect erodibility. (Unit 1) - ✔✔Steepness, length,
and roughness.
Sediment deposition occurs when soil-laden wind or water ____________
enough to allow the soil particles to settle out. (Unit 1) - ✔✔Slows
The ____________, _______________, and ________________ of the
transported particles influence the rate at which they settle out. (Unit 1) -
✔✔Size, shape, and density.
3
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
