Quiz 1
1. What is soil?
2. What ingredient makes up 45% of the soil?
3. What are the other 2 main ingredients together make up 50% of the soil? (2)
4. What is humus? (2)
5. Name 2 living organisms that help create healthy soil? (2)
6. How do they do this?
7. What 2 gases found in soil are crucial for plant growth? (2)
8. Soil provides the raw material for many industries. List 3 (3)
9. Is soil a renewable or non-renewable resource?
10. What are the layers of soil called?
11. What is another name for the top, the middle and the bottom layer? (3)
12. What conditions are necessary for leaching to occur? (2)
13. What is the name given to the hard layer that forms as a result of leaching?
14. What is the difference between sandy and clay soils?
15. What type of trees create plant litter?
16. What type of trees make the soil acidic? How do they do this? (2)
17. Name 2 ways humans can damage the soil? (2)
18. What is desertification? Name one area at risk of desertification. (2)
19. What name is given to the planting of different crops at different times in the one area. How does this help the soil? (2)
20. What is terrace farming? Where does this take place and why do they do it? (3)
21. How do windbreaks help the soil?
22. How many years does it take for 1cm of soil to form?
TOTAL 36
2. What ingredient makes up 45% of the soil?
3. What are the other 2 main ingredients together make up 50% of the soil? (2)
4. What is humus? (2)
5. Name 2 living organisms that help create healthy soil? (2)
6. How do they do this?
7. What 2 gases found in soil are crucial for plant growth? (2)
8. Soil provides the raw material for many industries. List 3 (3)
9. Is soil a renewable or non-renewable resource?
10. What are the layers of soil called?
11. What is another name for the top, the middle and the bottom layer? (3)
12. What conditions are necessary for leaching to occur? (2)
13. What is the name given to the hard layer that forms as a result of leaching?
14. What is the difference between sandy and clay soils?
15. What type of trees create plant litter?
16. What type of trees make the soil acidic? How do they do this? (2)
17. Name 2 ways humans can damage the soil? (2)
18. What is desertification? Name one area at risk of desertification. (2)
19. What name is given to the planting of different crops at different times in the one area. How does this help the soil? (2)
20. What is terrace farming? Where does this take place and why do they do it? (3)
21. How do windbreaks help the soil?
22. How many years does it take for 1cm of soil to form?
TOTAL 36