CEA 3.4.4 Soils

Front

Which of the following is NOT an inorganic component of soil? Gravel, Clay, Silt, Sand

Back

Humus

Answer explanation

Humus is not an inorganic (non-living) component of soil. Inorganic components of soil include sand, silt, clay, minerals, and water.

Front

Which type of soil gradation has a good number of many of the particle sizes in the soil sample?

Back

Well-Graded

Front

What is defined as the lowest moisture content at which soils can be rolled into 1/8” diameter thread without breaking?

Back

Plastic Limit

Front

What is defined as the minimum moisture content at which soil will flow when a small cutting force is applied?

Back

Liquid limit

Front

Which soil grain shape has the most stability?

Back

Angular

Front

Organic matter that is decomposed to where it is unrecognizable.

Back

Humus

Front

Another name for Horizon A.

Back

Topsoil

Front

Another name for subsoil.

Back

Horizon B

Front

The largest soil particle size.

Back

Sand

Front

The natural ability of the soil to allow water to flow through it is ___.

Back

Soil Drainage