Soil Review

1. What is soil made of? Select all that apply

• rocks and minerals

• decayed plants

  and decayed animals

• bacteria and living organisms

• air and water

2. Which of the following are properties of soil?

• a. Fertility

  (ability to grow plants)

• b. Particle Size

• c. Color

• d. Ability to hold water

3. What is another name for the layers of soil?

• a. Levels

• b. Stories

• c. Horizons

• d. Blocks

4. What is the solid mass of rock at the very bottom called?

• a. Organic

• b. Topsoil

• c. Subsoil

• d. Bedrock

5. What layer is considered the 'B' layer of soil?

• a. Organic

• b. Topsoil

• c. Subsoil

• d. Parent material

6. What layer is the primary layer of soil where plants and animals live?

• a. Humus (Organic matter)

• b. Topsoil

• c. Subsoil

• d. Parent material

7. What layer is made up of plant remains like leaves and twigs?

• a. Humus

• b. Topsoil

• c. Subsoil

• d. Parent material

8. What layer is called the 'C' horizon and is made up mostly of rocks?

• a. Organic

• b. Topsoil

• c. Subsoil

• d. Parent material

9. How does soil help in supporting life on Earth?

• a. It filters the water

• b. It helps recycle nutrients like carbon and nitrogen

• c. Many plants grow in the soil

• d. Soil is home to living organisms such as bacteria

10. True or False: Soil can be over-farmed to where crops can no longer grow in it.

• True

• False