Which of the following is NOT a property of soil that can be observed?

• Composition

• Texture

• Particle Size

• O² given off

• Soil Profile

What are soil layers called?

• Rock

• Horizons

• Layers

• Profile

How many layers does a mature soil profile contain?

• 2

• 3

• 4

• 5

What are the 3 main soil horizons for a mature profile?

• topsoil, subsoil, parent material

• humus, topsoil, subsoil

• subsoil, parent material, bedrock

• humus, topsoil, bedrock

What is the composition of topsoil?

• sand, silt, clay

• humus, silt, rocks

• sand, rocks, minerals

• humus, clay, minerals

In which horizon do most animals such as bugs live?

• Humus

• Topsoil

• Subsoil

• Parent Material

• Bedrock

What is decayed organic material in soil?

• topsoil

• humus

• subsoil

• bedrock

What is the origin of clay, silt, and sand?

• humus

• bedrock

• subsoil

• topsoil

What does the size of the soil particles determine?

• pH

• mineral composition

• texture

• horizon posiition

What are loam, clay loam, silt loam, and clay?

• Soil particle sizes

• Soil Textures

• Soil pH

• Soil composition