Chapter 6: Earth Science - Soil

What two factors speed up rates of chemical reaction and weathering in rocks and soils?

In which area would weathering by frost wedging probably be most effective?

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

Clay minerals formed from gabbro or diorite bedrock illustrate which kind of weathering?

What mineral particles are the dominant coloring agents in reddish, brownish, and yellowish soils?

Which of the following minerals is most resistant to chemical weathering?

What is soil

From the land surface downward to the unweathered bedrock, which of the following is the correct order of the different soil horizons?

Which one of the following statements best describes erosion?

Sheeting (spalling) is mainly a process of mechanical weathering.

Which of the following best describes sets of fractures in relatively fresh bedrock, such as granite, which are roughly parallel to the land surface?

Quartz weathers readily to aluminum-rich clay minerals.

Which of the following is/are most susceptible to chemical weathering by dissolution?

Feldspars commonly decompose during weathering to clay minerals, silica, and soluble constituents.

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

A physical weathering process that causes granite to weather into rounded, dome-like shapes.

A common acid found in rain water, due to the carbon dioxide content of the atmosphere.

The name for the portion of soil made up of solid rock or mineral material.

A type of soil which commonly develops in river valleys, due to flooding of the river.