Exam 12: Soils

The regolith is found on top of the soil.

Solum is another term for the R horizon of soil.

Calculate and explain the porosity of a soil with a total volume 300 milliliters with 60 milliliters being the volume of its voids.

The upper layer in a diagnostic horizon is called the ________.

Humus has a consistency not unlike that of ________.

Which of the following represents an addition to soil water?

What is expected in polygenetic soils?

Field capacity is the maximum amount of water that can be retained in the soil after gravitational water has drained away.

The main value of the extensive terminology of the Soil Taxonomy is its ________.

A soil with a high cation exchange would likely be ________.

Bacteria are among the most important of all soil fauna.

In the soil, which of the separates are associated with significant chemical activity in soil?

Why do tropical rainforests usually have poor soils?

In the long run, temperature and moisture are the prime determinants of soil characteristics.

Several soil horizons together make up a ________.

The difference between field capacity and the wilting point is called ________.

Humus is associated with ________.

________ is a measure of the ease with which water moves through the soil.

Which pedogenic regime is most closely associated with the drier prairies of North America?

The main pedogenic regimes do NOT include ________.