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CISEC EXAM LATEST UPDATE THIS YEAR WITH 300 QUESTIONS AND CORRECT ANSWERS QUESTION BANK JUST RELEASED
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CISEC EXAM LATEST UPDATE THIS YEAR WITH 300 QUESTIONS AND CORRECT ANSWERS QUESTION BANK JUST RELEASED

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  • October 19, 2024
  • 74
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • CISEC.
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CISEC EXAM LATEST UPDATE THIS YEAR WITH 300
QUESTIONS AND CORRECT ANSWERS QUESTION
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, Page 2 of 74


CISEC EXAM A

QUESTION: What is erosion? - ANSWER-The process by which soil particles get displaced by the
act of wind or water




QUESTION: What are three types of wind erosion? - ANSWER-Surface Creep, Saltation, and
Suspension




QUESTION: Rolling and sliding movement of particles across a surface.

5-25% total soil loss by wind - ANSWER-Surface creep




QUESTION: Hopping and bouncing movement of particles.

50-80% total soil loss by wind - ANSWER-Saltation




QUESTION: Small, lightweight particles carried great distances by wind. Less than 10% total soil
loss by wind is defined as? - ANSWER-Suspension




QUESTION: What are the types of water erosion? - ANSWER-Raindrop erosion,

Sheet erosion,

Rill and gully erosion,

Stream and channel erosion,

, Page 3 of 74


Shoreline erosion,

Landslides




QUESTION: What is sheet erosion? - ANSWER-Stripping of soil that occurs due to sheet flows of
runoff




QUESTION: Rill and Gully Erosion




· If the runoff is allowed to concentrate and gain velocity or energy, it will cut rills and gullies as
it detaches more soil particles

· Rills: less than or equal to 3" deep

· Gullies: 3 or more rills converted to greater that 3" deep - ANSWER-· If the runoff is allowed to
concentrate and gain velocity or energy, it will cut rills and gullies as it detaches more soil
particles

· Rills: less than or equal to 3" deep

· Gullies: 3 or more rills converted to greater that 3" deep




QUESTION: Removal of soil and other embankment materials due to concentrated channel
flows - ANSWER-Streambank / Channel Erosion

, Page 4 of 74


QUESTION: True or False: Rills are more than 75mm deep and are often the start of gullies -
ANSWER-False.

Gullies are more than 75mm deep, Rills are less than 3" deep




QUESTION: What factors impact rainfall erosion?




Climate events

Soil erodibility

Length of flow down a slope

Slope of land (critical)

Erosion control BMPs

Sediment control BMPs - ANSWER-Climate events

Soil erodibility

Length of flow down a slope

Slope of land (critical)

Erosion control BMPs

Sediment control BMPs




QUESTION: True or False: Clay is highly erodible. - ANSWER-False

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