Soil Erosion & Sedimentation Control Training - Unit 3

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  • 1/21 Questions

    Vegetation stabilization can be either ______________ or _____________.

    • Difficult, easy
    • Hard, easy
    • Temporary, permanent
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Soil Erosion & Sedimentation Control Training - Unit 3 - Quiz
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Study exam for the Soil Erosion and Sedimentation Control Training - Unit 3

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  • 2. 

    _________________  insulates the soil from intense heat and cold, and conserves  ____________.

    • Mulch, moisture

    • Straw, seeds

    • Top dressing, water

    • Sodding, moisture

    Correct Answer
    A. Mulch, moisture
    Explanation
    Mulch is a material that is spread over the soil surface to insulate it from extreme temperatures, such as intense heat and cold. It acts as a protective layer, preventing the soil from losing moisture due to evaporation and reducing the impact of temperature fluctuations. Therefore, mulch helps to conserve moisture in the soil, making it the correct answer.

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  • 3. 

    Topsoil should be _____________ at the beginning of grading operations for later use.

    • Saved

    • Removed

    • Washed

    • Fertilized

    Correct Answer
    A. Saved
    Explanation
    Topsoil should be saved at the beginning of grading operations for later use. This is because topsoil is the uppermost layer of soil that is rich in nutrients and organic matter, making it valuable for plant growth. By saving the topsoil, it can be reused in landscaping or gardening projects, helping to maintain soil fertility and reduce the need for additional fertilizers. Additionally, saving topsoil can also help prevent erosion and soil degradation, promoting sustainable land management practices.

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  • 4. 

    A non-critical area is an area on which vegetation can be established without _____________.

    • Stabilization

    • Water

    • Ease

    • Difficulty

    Correct Answer
    A. Difficulty
    Explanation
    A non-critical area is an area on which vegetation can be established without difficulty. This means that the area does not require any special effort or challenges to stabilize the vegetation or provide water for its growth. The vegetation can grow naturally and easily in this area without any complications or obstacles.

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  • 5. 

    Legumes furnish _________________ to the soil,  an important plant nutrient.

    • Nitrogen

    • Acid

    • Oxygen

    • Moisture

    Correct Answer
    A. Nitrogen
    Explanation
    Legumes furnish nitrogen to the soil, which is an important plant nutrient. Nitrogen is a vital component of proteins, enzymes, and chlorophyll, all of which are essential for plant growth and development. Legumes have a unique ability to form a symbiotic relationship with nitrogen-fixing bacteria in their root nodules. These bacteria convert atmospheric nitrogen into a form that plants can utilize, thus enriching the soil with nitrogen. This makes legumes an excellent choice for crop rotation or cover cropping to improve soil fertility and promote healthy plant growth.

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  • 6. 

    A critical area is  ____________________ to stabilize with vegetation.  Whenever possible, critical areas should not be  _________________.

    • Easy, re-established

    • Difficult, uncovered

    • Diffcult, disturbed

    • Easy, disturbed

    Correct Answer
    A. Diffcult, disturbed
    Explanation
    In order to stabilize with vegetation, a critical area should be difficult to disturb. This means that it should be challenging to disrupt the natural state of the area, allowing vegetation to grow and stabilize the soil. Therefore, the correct answer is "difficult, disturbed."

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  • 7. 

    _________________  is the most commonly used mulch material.

    • Leaves

    • Paper

    • Straw

    • Bark

    Correct Answer
    A. Straw
    Explanation
    Straw is the most commonly used mulch material because it is readily available, affordable, and easy to apply. It helps to retain moisture in the soil, suppress weed growth, and regulate soil temperature. Straw also breaks down slowly, providing nutrients to plants over time. Additionally, it is lightweight and can be easily moved or spread around plants. Overall, straw is a versatile and effective mulch option for gardeners and landscapers.

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  • 8. 

    The best way to prevent erosion is to remove the minimum amount of _____________  and re-establish it as soon as possible.

    • Vegetation

    • Topsoil

    • Ground cover

    • Water

    Correct Answer
    A. Vegetation
    Explanation
    The best way to prevent erosion is to remove the minimum amount of vegetation and re-establish it as soon as possible. Vegetation, such as plants and trees, plays a crucial role in preventing erosion. The roots of vegetation help hold the soil in place, preventing it from being washed away by water or blown away by wind. By removing as little vegetation as possible and quickly replanting or re-establishing it, the soil can be protected from erosion and its negative effects on the environment.

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  • 9. 

    Sensitive areas are those areas next to __________ or __________ that can be easily damaged by sediment.

    • Forest, fields

    • Lakes, streams

    • Rivers, creeks

    • Slopes, mountains

    Correct Answer
    A. Lakes, streams
    Explanation
    Sensitive areas are those areas next to lakes or streams that can be easily damaged by sediment. Lakes and streams are vulnerable to sediment runoff, which can negatively impact their water quality and ecosystem. Sediment can clog waterways, smother aquatic plants and animals, and disrupt the natural flow of water. Therefore, it is important to protect these sensitive areas from sediment erosion and runoff to maintain the health and integrity of lakes and streams.

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  • 10. 

    Areas planted in the fall should be inspected in the ______________.

    • Winter

    • Spring

    • Summer

    • Fall

    Correct Answer
    A. Spring
    Explanation
    Areas planted in the fall should be inspected in the spring because this is the time when the plants have had time to establish themselves and start growing. By inspecting in the spring, any issues or problems with the plants can be identified and addressed early on, allowing for necessary actions to be taken to ensure their health and proper growth. Additionally, spring is a critical time for many plants as they enter their active growing season, making it important to assess their condition and provide any necessary care or maintenance.

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  • 11. 

    The amount of lime and/or fertilizer required for good vegetative growth can be determined through ______________________.

    • Soil moisture content

    • Area inspection

    • Soil testing

    • PH levels

    Correct Answer
    A. Soil testing
    Explanation
    Soil testing is a method that can determine the amount of lime and/or fertilizer required for good vegetative growth. By analyzing the composition and nutrient levels in the soil, soil testing provides valuable information about the soil's fertility and pH levels. This information helps farmers and gardeners make informed decisions about the type and quantity of lime and fertilizer to apply, ensuring optimal conditions for plant growth.

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  • 12. 

    Sprigging involves planting _____________  of live vegetation.

    • Selections

    • Containers

    • Sprigs

    • Seedlings

    Correct Answer
    A. Sprigs
    Explanation
    Sprigging involves planting sprigs of live vegetation. Sprigs are small sections of plants that include stems, leaves, and roots. This method of planting is commonly used for grasses and groundcovers, where small sections of the plant are placed in the soil to establish new growth. Unlike seedlings, which are young plants grown from seeds, sprigs are already mature sections of plants that can quickly establish and grow in the desired area. Therefore, the correct answer for this question is sprigs.

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  • 13. 

    Three factors that contribute to soil slippage are:

    • Poor bonding

    • Slope steepness

    • Lack of top dressing

    • Low moisture content

    • High moisture content

    Correct Answer(s)
    A. Poor bonding
    A. Slope steepness
    A. High moisture content
    Explanation
    Soil slippage occurs when the soil loses its stability and slides down a slope. Poor bonding refers to the lack of cohesion between soil particles, which weakens the soil structure and makes it prone to slippage. Slope steepness plays a role as well, as steeper slopes increase the force of gravity acting on the soil, making it more likely to slide. High moisture content also contributes to soil slippage, as it reduces the friction between soil particles and makes the soil more prone to movement.

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  • 14. 

    When slopes are steeper the _________ (horizontal/vertical), structures may be more effective to control erosion than vegetation.

    • 3:1

    • 4:1

    • 2:1

    Correct Answer
    A. 2:1
    Explanation
    When slopes are steeper, the vertical structures may be more effective to control erosion than vegetation. This is because vertical structures, such as retaining walls or gabion baskets, can provide a stronger barrier against the force of gravity and water flow on steep slopes. Vegetation alone may not be able to withstand the erosive forces on steep slopes and may be easily uprooted or washed away. Therefore, using vertical structures with a slope ratio of 2:1 is likely to be more effective in preventing erosion on steep slopes.

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  • 15. 

    It is important that ________________  and ______________ be done as soon as the seedbed is ready.

    • Top dressing, watering

    • Seeding, mulching

    • Sprigging, mulching

    • Top dressing, seeding

    Correct Answer
    A. Seeding, mulching
    Explanation
    Seeding and mulching should be done as soon as the seedbed is ready because seeding refers to the process of planting seeds in the soil to establish new plants, while mulching involves covering the soil with a layer of organic material to conserve moisture, suppress weeds, and regulate soil temperature. By seeding and mulching early, the seeds have a better chance of germination and the mulch helps to create a favorable environment for the seeds to grow by providing moisture and reducing competition from weeds.

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  • 16. 

    The two types of maintenance required for vegetation stabilization are:  _____________  and  _______________.

    • Seeding, mulching

    • Follow-up, periodic

    • Sprigging, sodding

    Correct Answer
    A. Follow-up, periodic
    Explanation
    The two types of maintenance required for vegetation stabilization are follow-up and periodic. Follow-up maintenance refers to the ongoing care and monitoring of the vegetation after it has been initially established, such as regular watering, pruning, and weeding. Periodic maintenance, on the other hand, involves scheduled and less frequent activities like fertilizing, aerating, and reseeding to ensure the long-term health and stability of the vegetation.

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  • 17. 

    The four methods for establishing vegetation are:

    • Seeding

    • Top dressing

    • Sprigging

    • Sodding

    • Planting a root-balled or container grown shrub or tree

    Correct Answer(s)
    A. Seeding
    A. Sprigging
    A. Sodding
    A. Planting a root-balled or container grown shrub or tree
    Explanation
    The correct answer includes four methods for establishing vegetation: seeding, sprigging, sodding, and planting a root-balled or container grown shrub or tree. These methods involve different techniques to introduce and grow vegetation in an area. Seeding refers to the process of sowing seeds directly into the soil, sprigging involves planting small sections of grass or plants, sodding is the process of laying down pre-grown grass or plants in the form of sod, and planting a root-balled or container grown shrub or tree involves transplanting a fully grown plant with its root system intact. These methods provide options for establishing vegetation based on the specific needs and conditions of the area.

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  • 18. 

    Subsoils are generally low in ___________ and are __________.

    • PH, acid

    • Moisture, dry

    • Acidity, fertile

    • Fertility, acid

    Correct Answer
    A. Fertility, acid
    Explanation
    Subsoils are generally low in fertility and are acidic. This means that subsoils typically have a lack of essential nutrients required for plant growth and development, making them less fertile. Additionally, the acidity of subsoils can further hinder nutrient availability and uptake by plants, further contributing to their low fertility.

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  • 19. 

    Soil pH should be no lower that ________ for most grasses and no lower that __________ for legumes.

    • 6.5, 4.5

    • 4.5, 5.5

    • 6.5, 5.5

    • 5.5, 6.5

    Correct Answer
    A. 5.5, 6.5
    Explanation
    Most grasses prefer a soil pH of no lower than 5.5, while legumes prefer a pH no lower than 6.5. This means that grasses can tolerate slightly more acidic conditions than legumes.

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  • 20. 

    When selecting plant materials for stabilization, consideration should be given to: (choose the answers that most apply)

    • Site use and maintenance

    • Slopes

    • Soil

    • Climate

    • Soil moisture content

    Correct Answer(s)
    A. Site use and maintenance
    A. Slopes
    A. Soil
    A. Climate
    Explanation
    When selecting plant materials for stabilization, it is important to consider various factors such as site use and maintenance, slopes, soil, climate, and soil moisture content. These factors play a crucial role in determining the suitability of plant materials for stabilizing the area. The site use and maintenance factor helps ensure that the selected plants can thrive in the specific site conditions and are compatible with the intended use of the area. Slopes are important to consider as they can affect the stability of the plants and their ability to prevent erosion. Soil conditions, including its composition and fertility, are crucial for the successful growth of plant materials. Climate is another important factor as it determines the environmental conditions that the plants will be exposed to, including temperature, rainfall, and sunlight. Lastly, soil moisture content is important to consider as it affects the water availability for the plants. Overall, considering these factors ensures that the selected plant materials are suitable for stabilizing the specific site.

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  • 21. 

    Consideration should be given to on-site soil conditions such as:  (choose the answers that most apply)

    • Soil moisture content

    • Nitrogen content

    • Fertility

    • Acidity

    • PH levels

    Correct Answer(s)
    A. Soil moisture content
    A. Fertility
    A. Acidity
    Explanation
    The on-site soil conditions that should be considered include soil moisture content, fertility, and acidity. Soil moisture content is important because it affects the availability of water to plants and can impact their growth. Fertility refers to the nutrient content of the soil, which is crucial for plant health and productivity. Acidity, or pH levels, is important because it affects the availability of nutrients in the soil and can impact plant growth. Nitrogen content is not mentioned in the answer, so it is not applicable in this case.

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  • Current Version
  • Jul 22, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Jun 23, 2009
    Quiz Created by
    Dcrowe
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