Understanding Soils

Understanding Soils

Read each question carefully and answer to the best of your ability.

1. Which type of soil is best for growing most plants because it holds water and nutrients well?

2. What is the top layer of soil called, which is rich in organic matter and nutrients?

3. Soil is made up of weathered rocks, organic matter, water, and  .

4. The process by which wind and water carry away soil is called  .

5. All soils are exactly the same and have the same color and texture.

6. Humus is the dark, rich organic material in soil that helps plants grow.

7. Look at the diagram below. What is the name of the layer labeled 'O' and what is it mostly made of?

8. Why is healthy soil important for our environment?

Use the words below to complete the sentences.

9. Soil rich in   is very fertile and good for farming.

10. Tiny particles that make soil feel smooth and sticky when wet are found in   soil.