Weathering and Sedimentary Rocks Quiz

Mechanical or physical weathering is when

• rocks break down by chemical transformation into one or more new compounds

• rocks break down into smaller and smaller pieces without changing their mineral composition

• disintegrated rocks are transported from one place to another

• rocks are transformed by heat to another rock

Chemical weathering is when

• rocks break down by chemical transformation into one or more new compounds

• rocks break down into smaller and smaller pieces without changing their mineral composition

• disintegrated rocks are transported from one place to another

• rocks are transformed by heat to another rock

When large masses of igneous rock break loose in concentric layers following the removal of overburden, the is referred to as

• frost wedging

• oxidation

• sheeting

• talus

The most stable mineral at the surface of earth is

• olivine

• pyroxene

• plagioclase feldspar

• quartz

Chemical weathering can involve

• dissolution

• oxidation

• hydrolysis

• all of the above

The layer of rock and mineral fragments produced by weathering that overlies bedrock is called a

• lahar

• regolith

• batholith

• laccolith

Soil consists of a combination of

• mineral and organic matter

• water

• air

• all of the above

Soil formation is controlled by

• parent material and topography

• climate and time

• plants and animals

• all of the above

The B horizon of a soil is where

• finer particles are leached

• finer particles leached from above accumulate

• no change takes place

• unweathered rock is found

A pedocal is a soil with a high content of

• olivine that supports the growth of plants

• copper

• calcium carbonate

• gypsum that is found in southern Alberta