Soil Profile

Which layer of soil has low organic material and has clay in the form of aluminum and iron compounds?

• Topsoil

• Bedrock

• Subsoil

Which layer of soil contains lots of roots and minerals for growing plants?

• Topsoil

• Subsoil

• Bedrock

Layers of soil are also known as:

• Soil Profiles
• Soil Horizons
• Soil sheets
• Soil cores

Which of the horizons in the soil profile shown represent the organic material?

• Horizon O (Humus)
• Horizon A
• Horizon B
• Horizon C

In which horizon do most animals such as bugs live?

• Humus

• Topsoil

• Subsoil

• Parent Material

• Bedrock

Which layer is the parent material?

• Horizon O

• Horizon A

• Horizon B

• Horizon C

• Horizon R

Which horizon is made up of partially weathered rocks?

• Horizon A
• Horizon B
• Horizon C
• Horizon D or R

Place the following layers in order from top to bottom: bedrock, topsoil, subsoil, organic, parent material.

• Organic, Topsoil, Subsoil, Parent Material, Bedrock
• Organic, Topsoil, Parent Material, Subsoil, Bedrock
• Topsoil, Organic, Subsoil, Parent Material, Bedrock
• Topsoil, Organic, Parent Material, Subsoil, Bedrock

If your soil sample from your farm or garden has 25% sand, 40% silt and 35%. What is the texture of your soil?

• clay

• clay loam

• loam

• sandy clay

If your soil sample has 35% sand,40% silt and 25% clay, identify the soil texture using the soil texture triangle provided to you.

• silt

• clay loam

• loam

• silt loam