Natural Resources 1 (Soils Unit)

The soil particle, often found by streams, that has a doughy or powdery feel is:

• clay

• humus

• sand

• silt

While evaluating soil structure, Kevin discovered that each soil particle stood alone and failed to clump together. He determined the structure to be:

• blocky

• platy

• massive

• single grain

When learning about soils, Jeannie was told that permeability is determined by:

• A. infiltration and pH.

• B. infiltration and percolation.

• C. profile and structure.

• D. percolation and pH.

When learning about soils, Jeannie was told that permeability is determined by:

• Silt

• parent material

• topography

• weathering

Phil used his thumb and extended forefinger to apply pressure to a clump of soil. It offered no resistance to crumbling. He determined that the consistency was:

• loose

• friable

• firm

• very firm

6. The soil horizon with the most organic matter is the:

• A horizon

• B horizon

• C horizon

• R horizon

Capillary water is found:

• A. in the soil, held between soil particles.

• B. aboveground, on the surface layer.

• C. draining downward in the soil.

• D. sticking to each soil particle.

8. The O horizon in a soil profile is:

• not a true soil

• made up of rocks

• mostly parent material

• commonly called soil

9. The steepness of terrain affecting the speed at which water flows is which soil forming factor?

• climate

• living organisms

• parent material

• topography

10. Shaina found that a soil sample felt gritty and was unable to stick to her finger. She determined the texture to be:

• clayey

• loamy

• platy

• sandy