Home > Middle School > Quizzes > Grades 6, 7 and 8 - Geography - Middle School - Soil Erosion and Degradation
Grades 6, 7 and 8 - Geography - Middle School - Soil Erosion and Degradation
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The loss of soil also damages other environments. It increases the pollution in the waterways and the sedimentation in streams and rivers. Blocking these waterways reduces the drainage and so removes the possibility of fish and other aquatic life breeding and occupying these valuable resources. Soil is the foundation of all the living things. The nutrients that the plants need to grow and begin the food chain are found in the soil. And most of the nutrient cycles that return these valuable compounds into the food chain take place in the ecosystems that are hidden within the soil. Whilst... Show more
Grades 6, 7 and 8 - Geography - Middle School - Soil Erosion and Degradation
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10 Questions

1. What form of erosion occurs when intense rainfall cuts small streams into slopes in areas with little or no vegetation cover?
2. Which of the following is not a method of soil conservation?
3. Where do most nutrients in soils come from?
4. What is the danger of soil being left bare in hot, dry zones?
5. What type of erosion occurs when moderate rainfall on bare soil removes the topsoil down-slope?
6. On many islands and in some nature reserves, goats are being removed and banned. How does removing goats and similar grazing animals reduce soil erosion?
7. What happens to the soil when salinisation occurs?
8. Heavy machinery often leads to soil compaction. How does soil compaction lead to soil erosion?
9. When a field is plowed, why is it best to plow at right angles to the slope?
10. Nomadic tribespeople are becoming more sedentary, leading to over cultivation. How is over cultivation defined?