Exam 4: Weathering, soil, and Mass Wasting

Which of the following best describes the process of eluviation?

Chemical weathering rates are highest in ________.

In the Rocky Mountain region of the United States,north-facing slopes (downhill direction is toward the north)are typically moister and more heavily forested than south-facing slopes.Why?

Mass wasting,a process that often occurs between weathering and erosion,involves ________.

A soil that has nearly equal amounts of clay,silt and sand is called ________.

rockslide debris flow creep slump

All of the following are factors that affect rates of weathering except for ________.

Quartz is quite resistant to weathering and is an important component of sands in riverbeds and on beaches.

The word topsoil is commonly used,but not always correctly.The proper definition is ________.

Deforestation of rain forests exposes tropical soils that are famous for their low fertility,despite the fact that they had previously hosted a lush tropical forest.Which soil type would describe these soils?

Given enough time,what factor is typically most important in soil formation?

Repeated freezing and thawing can be important in soil creep movements.

Earthflows and slumps generally involve movement of unconsolidated or weakly consolidated soil and regolith.

Half Dome in Yosemite National Park,California,and Stone Mountain in Georgia are shaped mainly by what mechanical weathering process?

Which one of the following statements concerning mechanical weathering is not true?

Water runoff is a major factor in soil erosion,what is a common land use practice on slopes to minimize soil erosion?

What term refers to removal of soluble inorganic components from soils?

Which of the following statements concerning mudflows is not true?

What is the most abundant,naturally produced,weak acid involved in chemical weathering and soil formation?

Very fine-grained iron oxide particles account for nearly all red,yellow,and brown soil colors.