Grade 6 Agriculture – Soil Erosion Control Quiz
1. Which among the following is not a type of soil erosion?
2. What is soil erosion
3. List two types of soil erosion
4. The drops that fall from roofs of houses cause___type of erosion
5. What is gully erosion?
6. What is the main method of controlling soil erosion?
7. What are gabions?
8. What is the primary cause of soil erosion in Kenya?
Deforestation is the primary cause of soil erosion in Kenya as it removes vegetation that helps to hold the soil in place.
9. Which of the following practices can help prevent soil erosion?
Planting trees helps to reduce soil erosion by providing roots that hold the soil in place and increase water retention.
10. What is a common man-made factor contributing to soil erosion in Kenya?
Construction activities disrupt the natural environment and can lead to increased soil erosion through soil compaction and removal of vegetation.
11. Which of the following is a method of controlling soil erosion?
Mulching involves covering the soil with organic material to protect it from erosion, retain moisture, and improve soil health.
12. How does contour plowing help in controlling soil erosion?
Contour plowing involves plowing across the slope of the land, which helps to reduce water runoff and soil erosion by slowing down the flow of water.
13. Which farming practice is detrimental to soil conservation?
Clearing land for cultivation involves removing natural vegetation, leading to increased soil erosion and loss of biodiversity.
14. What should farmers do to prevent soil erosion on their farms?
Planting cover crops helps to protect the soil from erosion, improve soil structure, and provide nutrients for the next crop.
15. Which of the following techniques helps in reducing soil erosion on slopes?
Terracing involves creating steps or benches on slopes to reduce the speed of water runoff and control soil erosion.
16. What is the negative impact of soil erosion on agriculture in Kenya?
Soil erosion leads to loss of topsoil and nutrients, which can reduce crop yields and agricultural productivity in Kenya.
17. Which of the following is a mechanical method of soil erosion control?
Terracing involves constructing physical barriers on steep slopes to slow down water runoff and prevent soil erosion.
18. Which of the following is NOT a method of soil erosion control?
Deforestation actually contributes to soil erosion as it removes the natural vegetation cover that helps hold the soil in place.
19. What is the purpose of terracing in soil erosion control?
Terracing helps to reduce the speed of water runoff on sloped land, reducing the erosion of soil.
20. Which practice helps to prevent soil erosion by keeping the soil covered?
Cover cropping involves planting crops to cover the soil surface, reducing erosion caused by wind and water.
21. Which method of soil erosion control involves placing organic materials on the soil surface?
Mulching helps retain soil moisture, reduce water runoff, and protect the soil from erosion by wind and water.
22. What can happen if soil erosion is not controlled?
Unchecked soil erosion can lead to soil degradation, loss of topsoil, reduced fertility, and poor crop yields.
23. Why is it important to plant trees to control soil erosion?
Tree roots help anchor the soil in place, preventing erosion by water and wind and improving soil structure.
24. What is the purpose of contour plowing in soil erosion control?
Contour plowing involves plowing parallel to the natural contours of the land to reduce water runoff and prevent soil erosion.
25. Which of the following practices helps to prevent soil erosion by reducing wind speed near the ground?
Windbreaks are rows of trees or shrubs planted to reduce wind speed near the ground, preventing soil erosion by wind.
26. How does no-till farming help in soil erosion control?
No-till farming involves planting crops without plowing the soil, leaving crop residue on the surface to protect the soil from erosion.
27. Which of the following practices does not contribute to soil erosion?
Mulching bare soil actually helps prevent soil erosion by protecting the soil from the impact of raindrops and reducing water runoff.
28. What is the primary cause of soil erosion in Kenya?
Deforestation is the primary cause of soil erosion in Kenya as it removes the protective cover of trees and vegetation on the soil.
29. Which method helps to reduce soil erosion on steep slopes?
Terracing the land helps to create steps on steep slopes, reducing the speed of water runoff and allowing water to infiltrate the soil, thus preventing erosion.
30. What is the role of soil erosion control in agriculture?
By preventing soil erosion, agriculture can maintain soil health, retain nutrients, and improve water retention, leading to increased crop yields.
31. Which practice is harmful to soil health and contributes to erosion?
Overgrazing by livestock removes vegetation cover, compacts the soil, and increases the likelihood of erosion.
32. How does planting trees help prevent soil erosion?
Planting trees helps stabilize the soil with their root systems, reducing the risk of erosion caused by water runoff.
33. Which agricultural practice promotes soil erosion?
Monoculture farming involves growing a single crop over a large area, which can lead to soil erosion due to lack of diversity in vegetation cover.
34. What impact does soil erosion have on water quality?
Soil erosion can increase sedimentation in water bodies, leading to decreased water quality and impacting aquatic habitats negatively.
35. Which method is effective in preventing gully erosion?
Building check dams can help slow down water flow, trap sediment, and prevent further erosion in gullies.
36. How does contour plowing help in soil erosion control?
Contour plowing involves plowing parallel to the contour lines of the land, which helps slow down water runoff and reduce soil erosion.