Soil Structure & Systems - 无忧得胜-网上国际课程 (5edu.win)

1#

State which of the following is n(kkkjgykl. 47ot a type of soil particle.

A. Loam

B. Clay

C. Sand

D. Silt

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2#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

List the soil particles in order fro/ez fuk14b lo6 wq,mec.)5yhu 5ss,zx m smallest to largest.

A. Clay - silt - sand

B. Clay - sand - silt

C. Sand - silt - clay

D. Sand - clay - silt

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3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Identify the statement that bestlu1+j-aeape2 describes leaching.

A. Minerals move horizontally through the soil.

B. Leaf material decomposes and becomes part of the soil.

C. Organic material breaks down and returns minerals to the soil.

D. Water dissolves minerals and transfers them down.

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4#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

List which of the following are components of sonfy;piq(*cg 3y 02omfa wf;m) hkrcidv */a;4il.

I.
Eroded rock
II.
Remains of organisms
III.
Humus
IV.
Water

A. I and III only

B. II, III, and IV only

C. I, III, and IV only

D. I, II, III, and IV

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5#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

State the term for a soil sample that shows the layers in the soil.

A. Soil horizon

B. Soil profile

C. Soil texture

D. Soil particles

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6#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Figure: Tree roots on8q6 tvsa oz8/h*z ahdi;;gzr) a rock face

Deduce which of the following processes is best shown in this image.

A. Biological weathering

B. Physical weathering

C. Chemical weathering

D. Options A and B both

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7#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Weathering is a process where rock is broken down into smaller partic,*jqdsunosbs j5kt,( c*0eyyi l33lqt*, /aales. Identify which of the procs,/y3q *albc5a tndo*s(yql0 t kj,* iu,sej3esses below are involved in soil formation.

I.
Biological weathering
II.
Chemical weathering
III.
Physical weathering

A. I, II and III

B. II and III only

C. I and II only

D. III only

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8#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Figure: Typical soil profile din/1omn nhv:z9dw: y,o agram

In the figure, identify what the top or “O” layer is often referred to as:

A. The Outer Layer

B. The Oxygen Layer

C. The Organic Layer

D. The Zero layer

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9#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Figure: Soil texture triangls7du ,(*l -ew xzjh-fje

Classify a soil sample that is made up of 60% clay, 20% silt and 20% sand.

A. Silty clay

B. Clay

C. Clay loam

D. Sandy clay

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10#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Figure: Soil texture t+z cot)d9r x z:z5yf6dnj*e-a2tst 0oriangle

Use the figure to determine the type of soil that would be 15% clay, 5% sand, and 80% silt.

A. Silt

B. Clay

C. Silty clay loam

D. Silty loam

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11#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Figure: Soil texture tr7- z ;ljs4:n ;alxzelriangle

List the three soil types that we could have if our soil sample has 60% sand in it.

A. Type 1 is sandy loam,Type 2 is loam,Type 3 is sandy clay

B. Type 1 is sandy loam,Type 2 is loam,Type 3 is clay loam

C. Type 1 is sandy loam,Type 2 is sandy clay loam,Type 3 is sandy loam

D. Type 1 is sandy loam,Type 2 is clay loam,Type 3 is sandy silt loam

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12#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Figure: Soil texture tr t 94/c )ozc q yn5::dy0ox2wvoefdns9iangle

Classify a soil sample that is made up of 35% clay, 25% silt and 40% sand.

A. Sandy loam

B. Sandy clay loam

C. Clay loam

D. Loam

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13#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Figure: Typical soil profileeb/,5 v6nza i-hc9pjivfn8* p diagram

Identify which of the following is not a correct match of an above layer and it’s general characteristics.

A. Layer A is Surface Soil: Layer of mineral soil with most organic matter accumulation and soil life.

B. Layer B is Zone of eluviation where mineral leaching is most pronounced

C. Layer C is partially altered parent material

D. Layer D is Bedrock: Mostly unweathered parent material

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14#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

Identify which of the following are example ko:26zju8hn92m *y 8nzdvumjs-c u -vs of transfer processes involved in the fomsvv2nj9jn-dku8-cyuuz6 h o2* :8mzrmation of soil.

I.
Leaching of minerals dissolved in water
II.
Biological mixing such as movement through earthworms
III.
The chemical weathering of bedrock into smaller fragments

A. I only

B. I and II only

C. II and III only

D. I, II and III

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