Horticulture Lecture 11 Quiz 2: Soil Formation

The results of his research tell us that there are __________ major factors that control the formation of soil.

• six

• five

• four

• three

__________ parent material forms in lakes

• Lacustrine

• Alluvial

• Marine

• Eolian

__________ are wind deposited parent materials

• Marine

• Colluvial

• Alluvial

• Eolian

__________ are parent materials form under the influence of gravity.

• Alluvial

• Moraine

• Eolian

• Colluvial

Residual parent material forms in place from the weather of the underlying rock.

• True

• False

Colluvial Debris is made up of very well sorted rock fragments detached from the heights above and carried downslope, mostly by gravity assisted in some cases by the movement of ocean waves.

• True

• False

Glacial till – materials deposited directly by ice which are homogeneous mixtures of debris

• True

• False

The main sources of __________ are till and outwash from the Missouri and Mississippi River valleys left after the retreat of the glaciers.

• Loess

• Dune Sand

• Till

• Moraine

_______________ - very fine particles carried high into the air may travel for thousands of kilometers before being deposited, usually with rainfall.

• Aerosolic Dust

• Dune Sand

• Till

• Moraine

Volcanic Ash – during an eruption, cinders fall in the immediate area of the volcano, while fine often glass ash particles may blanket extensive areas down wind.

• True

• False