2. What do plants need to survive?

3. What is soil made of? Organic matter Sand, silt, clay Weathered rocks None of the above All of the above

4. Which is the largest sized weathered rock? Humus Organic Matter Silt Clay Sand

5. TRUE or FALSE? Silt has a silky texture.

6. What are the four layers of soil?

7. Which soil types makes up the eastern United States? Rainforest Tropical grassland Grassland Desert Forest

8. Sand Silt Clay Organic Matter Loam Best for plants sticky Grainy Silky Dead plants and animals Match the soil types with their characteristics

9. What are the soil horizons? List in order from top to bottom.

10. TRUE or FALSE? Organic Matter is one of the soil layers

11. List the types of consistence used to describe soil.

12. Sticky, silky, and grainy all describe Organic Matter Fertilizers Color Consistence Texture

13. What is located beneath parent material?

14. TRUE or FALSE? ‘A’ is the first horizon of soil.

15. TRUE or FALSE? Earthworms play an important role in healthy soil and plant growth.

16. What is the cycle of nutrients? A plant takes in nutrients from the soil through its roots. The nutrients are used to help the plant grow. When it dies, it falls to the ground where it decomposes and turns back into nutrients to be used by another plant.

17. What is located in the ‘O’ horizon?

18. What is located in the parent material layer?

19. Topsoil contains which of the following? Water Air Organic matter Sand, silt, and clay All of the above

20. What are nutrients?

21. I find this format to be helpful for my performance on the quiz. It is, but I have a better one I’ll tell you after the quiz Not sure No Yes

22. TRUE or FALSE? With a little more studying tonight, I will be ready to ace this quiz.

23. Explain the four major soil layers Top soil (horizon O-very top layer, and A) located at the top and contains large amounts of organic matter/humus— tends to be a small layer, less than 20 cm deep. Sub soil (horizon B) located below top soil (horizon A), tends to consist of clay, few nutrients, little organic matter. Parent material (horizon C) consists of slightly broken up bedrock, plants roots rarely penetrate this layer, very little organic matter. Bedrock (horizon R) is hard rock that lies beneath all soil layers.

24. What is the best type of soil for a garden? Humus Clay Silt Sand Loam

25. Which horizon is needed the most for a healthy garden? R O C B A

26. What is the consistence for desert soil?

27. TRUE or FALSE? Clay is good for growing.

28. How is soil made?

29. What is soil?

30. What is the difference between sand, silt and clay? Sand: grainy, loose, largest particles Silt: silky, friable, medium sized particles Clay: sticky, firm, smallest particles

31. Describe grassland soil. Wet and dry seasons but smaller amounts of rain. Large amounts of organic matter and nutrients; good for farming; soil is reddish brown, loose consistence, and silky texture

32. Describe forest soil hot and cold seasons, large amount of rain to support much tree growth; good farming soil; brown to reddish brown soil color; loose consistence

33. What is texture?

34. What is organic matter?

35. What is composition?

36. What is the difference between evidence and opinion?