Exam 10: Global Soils

Which of the following soils lacks distinctive horizons,is found in tropical regions and has a marked red color?

Which of the following soils would you find associated with the extensive grasslands of the Prairies?

Which of the following soils is normally the least fertile?

Which of the following types of soil particle is the smallest in size?

Which of the following soils would be most likely to accumulate calcium and salts?

Colloids are important to soil formation because ____________________.

Which of the following soils is dominated by clays that as they swell and contract mix the soil from within?

Which of the following soils would you expect to find in a constantly changing environment such as floodplain?

Which of the following features differentiates the different forms of Alfisols?

Which of the following soils would be best described as "poorly developed"?

_________________ are quite closely related to the Oxisols in outward appearance and environment of origin.But lacking in mineral content and high in clay.

Large masses in a soil that are grouped together to form the soil structure are referred to as:

Entisols and inceptisols are two examples of soils with well-developed horizons.

Which of the following types of soil particle is the largest in size?

An acidic soil would have a pH of ____________;an alkaline soil would have a pH of ___________;a neutral soil would have a pH of ____________.

Soils that form from parent material that is comprised largely of volcanic ash are referred to as vertisols.

A layer of weathered rock upon which a soil may form is referred to as the:

Which of the following describes the order of soil horizons from the surface downwards?

Using examples,compare and contrast the characteristics and origins of B horizons in a selection of tropical and mid-latitude soils.

Humus is finely divided,partially decomposed organic matter that either rests on the soil surface or is mixed through the soil.