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CSEE (Form 4) Soil — practice questions

Explore 8 free Soil questions in CSEE (Form 4) Geography. Open each question or exercise to read its content, reference answers and available explanation.

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Soil questions and exercises with answers

Showing questions 1–8 of 8.

Which soil horizon contains the finest particles and the most humus?Read the answer and worked solution →In a soil profile, the C horizon consists mainly of:Read the answer and worked solution →Order the soil profileRead the answer and worked solution →Soil and Earth, true or falseRead the answer and worked solution →Topsoil or bedrock?Read the answer and worked solution →Which type of erosion removes a uniform thin layer of topsoil by running water?Read the answer and worked solution →Order the stages of water erosionRead the answer and worked solution →Erosion and forests, true or falseRead the answer and worked solution →

Worked practice questions

Which soil horizon contains the finest particles and the most humus?

  1. The D horizon
  2. The B horizon
  3. The C horizon
  4. The A horizon
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Correct answer: D. The A horizon

1. A soil profile is made of layers called horizons, each with its own composition. 2. The A horizon is the topsoil, holding the finest particles and the greatest amount of humus. 3. That humus content is what makes it the most fertile layer for plant growth. 4. The C horizon is bedrock and the D horizon holds small soil particles beneath it. 5. There is no E horizon in the soil profile at all, so any option naming one is wrong on its face. _Source: NECTA CSEE 2023 Geography 013, Question 1: Multiple Choice Questions, item (ii)_

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In a soil profile, the C horizon consists mainly of:

  1. topsoil rich in humus
  2. solid unweathered bedrock
  3. weathered rock fragments
  4. very fine clay particles
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Correct answer: B. solid unweathered bedrock

1. Horizons are arranged by depth, growing less weathered further down. 2. The A horizon at the top holds the finest particles and the most humus. 3. Below the layers of soil lies the C horizon, which is bedrock. 4. Beneath that the D horizon holds small soil particles. 5. Naming an E horizon is a recorded error, since no such horizon exists in the profile. _Source: NECTA CSEE 2023 Geography 013, Question 1: Multiple Choice Questions, item (ii)_

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Order the soil profile

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Steps
  1. A horizon: topsoil and humus
  2. B horizon: subsoil
  3. C horizon: bedrock
  4. D horizon: small particles
Instructions
Tap the horizons in order, from the surface downwards.

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