Soil Layers Worksheet

Soil Layers Exploration

Read each question carefully and answer to the best of your ability. Refer to the diagram provided for assistance.

1. Which soil horizon is primarily composed of organic matter like decaying leaves and humus?

2. The process of water carrying dissolved minerals and nutrients downwards through soil layers is called:

3. The   horizon is often referred to as topsoil and is rich in organic matter.

4. The parent material from which soil is formed is found in the   horizon.

5. The accumulation of clay and mineral deposits is characteristic of the   horizon.

6. The O horizon is typically found below the A horizon.

7. Bedrock is the deepest layer of soil and is unweathered.

8. Describe the main characteristics of the B horizon.

9. Explain why the O horizon is important for plant growth.

Match each soil horizon with its primary characteristic.