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Free Practice Quiz Question List

4 Soil Erosion and Conservation Online Quiz Questions

Use this free practice quiz with 20 questions to review 4 Soil Erosion and Conservation, test your knowledge, and prepare for your next test or exam.

20 questions
01
Choose one
1 point

A field will remain uncropped for several weeks after harvest. Which practice would best protect its exposed soil during that period?

  1. A

    Removing all crop residue after harvest

  2. B

    Leaving crop residue on the field after harvest

  3. C

    Tilling the field repeatedly between crops

  4. D

    Compacting the soil surface

02
True or false
1 point

True or false: Avoiding excessive soil compaction can help reduce erosion by allowing more water to enter the soil instead of running off.

  1. A

    True

  2. B

    False

03
Written response
1 point

What is the term for wind erosion in which soil particles bounce along the surface?

04
Choose all
1 point

Which conditions can increase the risk of water erosion? Select all that apply.

  1. A

    Intense rainfall

  2. B

    Dry, loose soil exposed to strong winds

  3. C

    A long or steep slope

  4. D

    Stable soil aggregates and good infiltration

  5. E

    Soil that absorbs water slowly

05
Choose one
1 point

A farmer wants to slow runoff on a sloping field by changing the direction of field operations. Which practice is designed for this purpose?

  1. A

    Plowing straight downhill to shorten field operations

  2. B

    Removing vegetation along the slope

  3. C

    Farming along the natural contours of the slope

  4. D

    Directing all runoff into a single unprotected channel

06
Written response
1 point

What is the term for runoff removing a thin, relatively even layer of soil across a broad area?

07
True or false
1 point

True or false: Terraces can help reduce soil loss by dividing a long slope into shorter sections and slowing runoff.

  1. A

    True

  2. B

    False

08
Choose all
1 point

Which are ways wind can move soil particles? Select all that apply.

  1. A

    Suspension

  2. B

    Saltation

  3. C

    Rill formation

  4. D

    Surface creep

09
Choose one
1 point

A land manager wants to reduce streambank erosion and help filter sediment from runoff entering a stream. Which action best addresses both goals?

  1. A

    Tilling a wider strip of soil beside the stream

  2. B

    Maintaining vegetation along the stream

  3. C

    Removing plants from the streambank

  4. D

    Routing concentrated runoff across an unprotected bank

10
Open ended
1 point

A cultivated slope has little crop residue and is vulnerable to heavy rain. Propose a conservation plan using at least two practices from the material, and explain how each practice would reduce erosion. Account for the fact that conservation methods should suit local conditions.

11
Choose one
1 point

Which soil condition is most likely to help a field resist water erosion?

  1. A

    Bare, loose soil with poor water entry

  2. B

    A long slope with intense runoff

  3. C

    Freshly tilled soil with little protective cover

  4. D

    Stable aggregates and good infiltration

12
Choose one
1 point

After heavy rain strikes a bare field, soil particles are dislodged directly by the impact of the raindrops. Which form of water erosion is occurring?

  1. A

    Sheet erosion

  2. B

    Splash erosion

  3. C

    Rill erosion

  4. D

    Gully erosion

13
Choose one
1 point

A farmer notices that a broad field has gradually lost a thin, fairly even layer of soil, but no distinct channels have formed. Which process best explains the loss?

  1. A

    A few deep channels cut by concentrated runoff

  2. B

    Soil particles bouncing along the ground in wind

  3. C

    A thin, relatively even layer of soil removed across a broad area

  4. D

    Stream banks wearing away where water flows

14
Written response
1 point

Wind carries soil particles by making them bounce along the ground. What is this wind-transport process called?

15
True or false
1 point

True or false: If small channels formed by flowing water are left unchecked, they may deepen or join together.

  1. A

    True

  2. B

    False

16
Choose one
1 point

Concentrated runoff has cut channels so large and deep that ordinary field operations cannot readily smooth them. Which form of erosion best describes these channels?

  1. A

    Splash erosion, because raindrops dislodge soil

  2. B

    Sheet erosion, because a thin layer is removed broadly

  3. C

    Rill erosion, because small channels can be smoothed by ordinary field operations

  4. D

    Gully erosion, because the channels are too large and deep for normal tillage to readily remove

17
Written response
1 point

A farmer plants and works a sloping field along its natural contours to slow water moving downhill. What is this practice called?

18
Choose one
1 point

Runoff carries eroded soil from a field into a nearby stream. Which downstream effect is a likely consequence?

  1. A

    Sediment can cloud water and carry nutrients into waterways.

  2. B

    Sediment prevents soil particles from moving further downhill.

  3. C

    Sediment increases the water-holding capacity of the field it leaves.

  4. D

    Sediment keeps reservoirs from filling.

19
Fill in the blank
1 point

A cultivated field loses soil during repeated field operations even when there is no rain or strong wind. In this setting, soil can be detached and moved by .

20
Fill in the blank
1 point

A field loses soil faster than new soil can form. Over time, this loss can reduce the land's capacity to support production, or its .