Soil formation and weathering Quiz

The decomposition of rock from exposure to water and atmospheric gases is called

• chemical weathering.

• transportation.

• deposition.

• mechanical weathering

Which is not a type of mechanical weathering?

• frost wedging.

• frost heaving.

• pressure release.

• oxidation

The single most effective agent of chemical weathering at Earth’s surface is

• carbonic acid H2CO3.

• water H2O.

• carbon dioxide CO2.

• hydrochloric acid HCl.

The most common end product of the chemical weathering of feldspar is

• clay minerals.

• pyroxene.

• amphibole.

• calcite

The most common end product of the chemical weathering of quartz is

• clay minerals.

• pyroxene.

• amphibole.

• calcite.

• quartz does not usually weather chemically.

Soil with approximately equal amounts of sand, silt, and clay along with a generous amount of organic matter is called

• loam.

• inorganic.

• humus.

• caliche.

The most important factor in determining the type of soil that forms is

• parent material

• living organisms.

• slope.

• climate.

• time.

The soil horizon containing only organic material is the

• A horizon.

• B horizon.

• C horizon.

• O horizon.

• E horizon

Hardpan forms in the

• A horizon.

• B horizon.

• C horizon.

• E horizon

Which of the following produce soil the fastest?

• Humid climate

• Dry climate

• Agriculture area

• Volcanic area