Exam 10: Weathering, Soil, and Erosion

__________ is the only rock-forming silicate mineral that does not weather to clay.

Rainwater is usually strongly acidic.

During hydrolysis, water reacts with feldspar to form clay.

In the weathering process of pressure-release fracturing:

Typically, soil creep occurs at a rate of about:

Soil on a hillside is generally __________ and __________ than on the valley floor.

You can distinguish creep from slump by the presence of pistol-butt trees.

A type of mass wasting in which a segment of bedrock slides downslope along a fracture is called __________.

Fall is the most rapid type of mass wasting.

Mechanical weathering:

In soils, leached ions and clay frequently accumulate in the:

When Mount St. Helens erupted, the meltwater from melting glaciers mixed with soil to form __________.

A flowing mixture of clay, silt, sand, and rock in which more than half of the particles are larger than sand is called a/an __________ __________.

During __________, rock or soil flows slowly downslope under the influence of gravity.

Feldspar weathers to form clay by the process of __________.

Soil is a mixture of:

Piles of talus found at the base of cliffs in high alpine areas are likely the result of:

Weathering is the decomposition and disintegration of rocks and minerals at the Earth's surface.

Atmospheric carbon dioxide dissolves in rainwater and reacts to form a:

The soil layer in which you would find the least organic material is the: