Soil Notes And Percolation Lab Quiz
Questions and Answers
- 1.
Sediment percolation: Which type of barrier island substrate allowed: The most water to pass through the quickest?
- A.
Coarse sand
- B.
Clay
- C.
Fine sand
- D.
Silt
- E.
Loam/peat
Correct Answer
A. Coarse sandExplanation
Coarse sand allows the most water to pass through the quickest because it has larger particles with more space between them. This allows water to easily flow through the gaps, resulting in faster percolation. Clay, fine sand, silt, and loam/peat have smaller particles and less space between them, leading to slower water percolation.Rate this question:
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- 2.
Sediment percolation: Which type of substrate allowed: The least water to pass through?
- A.
Coarse sand
- B.
Clay
- C.
Fine sand
- D.
Silt
- E.
Loam/peat
Correct Answer
B. ClayExplanation
Clay is the type of substrate that allows the least water to pass through. This is because clay particles are very fine and closely packed together, creating a dense structure with small pore spaces. These small pore spaces restrict the movement of water, resulting in low permeability. In contrast, coarse sand, fine sand, silt, and loam/peat have larger particle sizes and more open pore spaces, allowing water to flow more easily through the substrate.Rate this question:
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- 3.
Sediment percolation: Which type of barrier island substrate allows:The fine substrate to remain soft, not squishy, and moist and filter?
- A.
Coarse sand
- B.
Clay
- C.
Fine sand
- D.
Silt
- E.
Loam/peat
Correct Answer
D. SiltExplanation
Silt is the correct answer because it has smaller particle sizes compared to coarse sand and fine sand. This allows silt to retain moisture and filter water more effectively. Clay, on the other hand, tends to become hard and compacted when dry, while loam/peat is a mixture of different soil types and may not have the same filtering properties as silt.Rate this question:
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- 4.
Sediment percolation: Which type of barrier island substrate allows: The substrate to percolate quickly, feel dry to the touch, yet retain moisture and nutrients for its habitat?
- A.
Coarse sand
- B.
Clay
- C.
Fine sand
- D.
Silt
- E.
Loam/peat
Correct Answer
E. Loam/peatExplanation
Loam/peat is the correct answer because it is a type of substrate that allows for quick percolation, meaning water can easily move through it. Despite this, it still retains moisture and nutrients for the habitat. Loam is a soil type that contains a balanced combination of sand, silt, and clay, making it ideal for water movement and nutrient retention. Peat, on the other hand, is rich in organic matter and has high water-holding capacity. Together, loam/peat provides the perfect conditions for quick percolation, dry feel, and moisture and nutrient retention.Rate this question:
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- 5.
Particle Porosity and Permeability. Choose the statement that best describes the porosity of each set of soil particles.
- A.
Not porous, densely packed, uniform grain size
- B.
Most porous, loosely packed large grain size
- C.
Low porosity, mixed grain sizes
- D.
Porous, mixed grain size
Correct Answer
A. Not porous, densely packed, uniform grain sizeExplanation
The correct answer is "Not porous, densely packed, uniform grain size." This means that the soil particles are tightly packed together and do not have any open spaces or pores. Additionally, the grain size of the particles is consistent throughout, meaning they are all similar in size.Rate this question:
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- 6.
Particle Porosity and Permeability. Choose the statement that best describes the porosity of each set of soil particles.
- A.
Not porous, densely packed, uniform grain size
- B.
Most porous, loosely packed large grain size
- C.
Low porosity, mixed grain sizes
- D.
Porous, mixed grain size
Correct Answer
B. Most porous, loosely packed large grain sizeExplanation
The statement "Most porous, loosely packed large grain size" best describes the porosity of the set of soil particles. This means that the soil particles have a high level of porosity, meaning there are many open spaces or voids between the particles. The particles are loosely packed, allowing for more space between them. Additionally, the particles have a large grain size, which further contributes to the overall porosity of the soil.Rate this question:
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- 7.
Particle Porosity and Permeability. Choose the statement that best described the porosity of each set of soil particles.
- A.
Not porous, densely packed, uniform grain size
- B.
Most porous, loosely packed large grain size
- C.
Low porosity, mixed grain sizes
- D.
Porous, mixed grain size
Correct Answer
C. Low porosity, mixed grain sizesExplanation
The correct answer is "Low porosity, mixed grain sizes". This means that the soil particles have a small amount of empty space between them and they have a variety of different sizes. This combination of low porosity and mixed grain sizes suggests that the soil is not very permeable and may not allow water or other fluids to easily pass through it.Rate this question:
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- 8.
Soil includes four main ingredients the largest percentage is made up of: Use the diagram to help you respond to this question.
- A.
Minerals
- B.
Organic matter
- C.
Water
- D.
Air
Correct Answer
A. MineralsExplanation
The diagram shows that soil includes four main ingredients: minerals, organic matter, water, and air. Among these ingredients, minerals make up the largest percentage of soil. This means that minerals are the most abundant component in soil.Rate this question:
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- 9.
Substrate is:
- A.
Bottom material ocean organisms live in or on.
- B.
Bottom material found in the ocean.
- C.
Bottom material organisms live in or on.
- D.
Subtidal nutrients
Correct Answer
C. Bottom material organisms live in or on.Explanation
The correct answer is "Bottom material organisms live in or on." This answer accurately describes the substrate as the material that serves as a habitat for ocean organisms, whether they live on or in it. Substrate provides physical support and can also provide food and shelter for these organisms.Rate this question:
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- 10.
Use the diagram to identify soil particle - A
- A.
Gravel/rock
- B.
Sand
- C.
Silt
- D.
Clay
Correct Answer
A. Gravel/rockExplanation
Based on the diagram provided, the soil particle A is identified as gravel/rock. This can be determined by observing the size and texture of the particle, which appears to be larger and more coarse compared to the other options of sand, silt, and clay. Gravel/rock particles are typically larger in size and have a more rough and irregular texture.Rate this question:
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- 11.
Use the diagram to identify soil particle - B
- A.
Gravel/rock
- B.
Sand
- C.
Silt
- D.
Clay
Correct Answer
B. SandExplanation
Based on the diagram provided, the soil particle identified as "B" is sand. This is because sand particles are larger than silt and clay particles, but smaller than gravel/rock particles. Therefore, the correct answer is sand.Rate this question:
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- 12.
Use the diagram to identify soil particle - C
- A.
Gravel/rock
- B.
Sand
- C.
Silt
- D.
Clay
Correct Answer
C. SiltExplanation
The diagram provided shows different types of soil particles, including gravel/rock, sand, silt, and clay. The correct answer, "Silt," is identified by the letter "C" in the diagram.Rate this question:
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- 13.
Use the diagram to identify soil particle - D
- A.
Gravel/rock
- B.
Sand
- C.
Silt
- D.
Clay
Correct Answer
D. ClayExplanation
The diagram provided shows different types of soil particles, including gravel/rock, sand, silt, and clay. The correct answer, "Clay," refers to the soil particle labeled as such in the diagram.Rate this question:
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- 14.
What are the two ingredients in soil that are equal percentages? Use the diagram to help you respond to this question.
- A.
Air & Water
- B.
Organic matter and minerals
- C.
Rocks and minerals
- D.
Organic matter and water
Correct Answer
A. Air & WaterExplanation
The diagram provided in the question likely shows the composition of soil, indicating that it consists of air and water in equal percentages. This is a common characteristic of soil, as it needs to have a balance of air and water for plants to grow effectively. The other options, such as organic matter and minerals or rocks and minerals, are not typically found in equal percentages in soil.Rate this question:
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- 15.
What is soil?
- A.
Soil is a mixture of weathered rock and decayed organic matter.
- B.
Soil is a mixture of air, water and weathered rock.
- C.
Soil is organic matter found on land.
- D.
Soil is made of air, water and plant matter.
Correct Answer
A. Soil is a mixture of weathered rock and decayed organic matter.Explanation
Soil is a combination of weathered rock, which is the result of the breakdown of larger rocks into smaller particles over time, and decayed organic matter, which includes dead plants, animals, and microorganisms. This mixture provides the necessary nutrients and support for plant growth. Additionally, soil also contains air and water, but these components alone do not fully define what soil is.Rate this question:
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- 16.
Water percolates more slowly in silt and clay soils because these soils actually hold water by force. What is the attraction that helps soil hold onto water molecules
- A.
Adhesion
- B.
Cohesion
- C.
Capillary Action
- D.
Recharge
Correct Answer
A. AdhesionExplanation
Adhesion is the attraction between water molecules and the solid surfaces of the soil particles. In silt and clay soils, the small particles have a large surface area, allowing for more adhesion between the water molecules and the soil particles. This adhesion force helps the soil hold onto the water molecules, resulting in slower percolation of water through the soil.Rate this question:
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- 17.
Why is sediment considered soil under water?
- A.
Sediment is considered soil under water because unlike soil on land, sediment is found almost everywhere on the earth's surface, including on the bottom of the oceans and lakes, on river beds.
- B.
Sediment is considered soil underwater because of the rock found under water.
- C.
Sediment is considered soil underwater because it is fine grained.
- D.
Sediment is considered soil underwater because plants organisms can grow in it.
Correct Answer
A. Sediment is considered soil under water because unlike soil on land, sediment is found almost everywhere on the earth's surface, including on the bottom of the oceans and lakes, on river beds.Explanation
Sediment is considered soil under water because it is found in various aquatic environments such as oceans, lakes, and rivers. Just like soil on land, sediment consists of various particles, including minerals, organic matter, and even small organisms. It provides a substrate for plants and organisms to grow and thrive, similar to how soil supports terrestrial life. Therefore, sediment can be considered as soil under water due to its similar composition and ecological function in supporting aquatic ecosystems.Rate this question:
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Current Version
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Mar 20, 2023Quiz Edited by
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Apr 10, 2014Quiz Created by
Rhaveno
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