Exam 5: Weathering and Soil

Word Analysis Questions Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.

In pedalfer soils, the B horizon is enriched in calcite and humus.

Like most other liquids, water decreases in volume when it freezes.

How has agriculture, silviculture, and urbanization influenced soil erosion and transported sediment loads?

Word Analysis Questions Examine the words and/or phrases for each question below and determine the relationship among the majority of words/phrases. -Choose the option that does not fit the pattern.

Ferromagnesian minerals (like olivine and pyroxene)that crystallize at high temperatures in Bowen's reaction series are generally much less susceptible to chemical weathering than quartz.

Thermal cooling, especially of igneous rocks, results in the formation of regular patterns of joints.

Ordinary chemical weathering of rock forming minerals like feldspar and amphibole produces ________.

What is the feature labelled "A" in the diagram below? Also, how did it form?

The principal causes of mechanical fragmentation of rocks in place are ________.

Weathering is considered an internal process, because it involves chemical changes in minerals.

Rocks always weather chemically before they undergo mechanical weathering.

What term describes a soil that has developed from silt and clay deposited by a flooding river?

Hydrolysis is ________ to weaken or destroy the mineral lattice.

Assume that water filling a crack in a rock undergoes cycles of freezing and melting.Which of the following statements is true?

Abundant moisture and warm temperatures result in high rates of chemical weathering.

Sheeting fractures and exfoliation domes commonly develop in areas with soft, highly fractured bedrock.