Exam 2: Formation of Soils From Parent Materials

Even if all the glaciers present today in the world were to melt, the melt water would have no measurable effect on the level of the world's oceans.

Soils developed in wind-blown parent materials such as loess are generally of little agricultural value.

The parent materials for most coastal plain soils are residual in nature.

Which mineral is most resistant to weathering under humid temperate conditions?

Residual parent materials have generally been subjected to weathering for a longer period of time than have lacustrine or alluvial parent materials.

Residual parent materials are best described as __________.

In which of the following horizons has the process of illuviation most likely occurred?

Living organisms affect soil formation primarily by their constraining the level of oxygen in the soil.

Which of the following is not considered one of the five major factors influencing soil formation?

Iron and aluminum oxides are major components of igneous rocks.

Igneous, sedimentary, and metamorphic are three _________.

Glacial till is laid down by melt waters gushing out from the front of glaciers.

The presence of rocks such as shale and sandstone indicate the existence of _______.

A soil developed in transported parent materials will likely have properties related to the properties of the rock below the C horizon.

Which of the following statements is correct?

Sandstones are good examples of metamorphic rocks.

Climate influences not only the rate of weathering but the type of native vegetation dominant in an area.

The element most often involved in oxidation reactions as minerals weather is _____.

In most B horizons one of the dominant processes of soil formation has been eluviation.

The O horizons of a soil are dominantly organic horizons occurring above mineral horizons.