QUIZsoil

Why is sandy soil not the best choice for growing plants?

• The particles in sand are packed too tightly.

• The particles in sand are packed too loosely.

• Water cannot drain through sand and plants rot.

• Sand has zero nutrients and minerals.

Soil is made up of particles that are spaced tightly together or far apart. What are these particles?

• Roots, stems, and leaves

• Tiny pieces of rock, minerals, and nutrients

• minerals, roots, and leaves

• pieces of rock and organic matter

If you wanted to learn more about the soil composition in a particular area, what would you need to do?

• Dig up a large enough soil profile ranging from the surface to the underlying rock.

• Identify the soil horizon by viewing layer A that's closest to the surface.

• Dig up a small sample known for further testing.

• Identify the soil classification by viewing the plants and trees growing in the area.

Which of the following terms is used to describe a layer of the soil profile?

• Soil horizon

• Silt layer

• Soil aggregate

• Granulation

Type of soil that can become as hard as stone when it dries out.

• Clay

• Silt

• Sand

• Loam

What are the three main layers in a soil profile?

• Minerals, humus, and air

• Organic matter, parent material, bedrock

• Topsoil, subsoil, and parent material

• Clay, Silt, Sand

Soil is formed by the breaking up of rocks into tiny pieces.

• True

• False

What horizon is characterized by humus mixed with mineral and rock fragments?

• O

• A

• B

• C

What horizon is characterized by recognizable pieces of bed rock in various stages of weathering

• O

• A

• B

• C

Which layer in a soil profile would be most affected by weathering & erosion

• O

• A

• B

• C