Exam 10: Global Soils

Which of the following is not an example of a soil secondary mineral?

In which type of soil would you find laterite?

The epipedon and a subsurface horizon formed by the accumulation or removal of matter are referred to as the diagnostic horizons.

Describe the nature of soil texture and explain its role in a soil water budget

The term _______________ describes all forms of mineral matter that are suitable for transformation into soil.

Which of the following soils is characterized by high acidity?

Using an annotated diagram,describe a generalized soil profile and label the horizons.Point out the parts of the profile where various soil processes dominate,such as eluviation,illuviation and humification.

Describe the soils most commonly in equatorial regions and explain the reasons for their differences.

________,soils of the desert climate,are dry for long periods of time.

Which of the following features characterizes an argillic horizon?

A soil that has equal parts of sand and silt with a smaller proportion of clay is referred to as a:

Ustolls are a particular type of which of the following soils?

Colloid surfaces tend to be positively charged and thus attract negatively charged ions.

The development of a light-colored,mineral rich A horizon is the direct result of which of the following processes?

Argillic horizons are characteristic of oxisols,alfisols and mollisols.

The display of horizons on a cross section through the soil is termed a _________________.

Finely divided,partially decomposed organic matter is referred to as:

A soil may be said to be saturated under which of the following conditions?

The proportion of sand,silt and clay in a soil is referred to as the:

Storage withdrawal in a soil water budget is represented by the difference between the water-use curve and the precipitation curve.