Physical Properties of Soil Quiz

Good soil structure is important for preventing excess water retention.

Cementation refers to the separation of soil particles.

Flocculation occurs due to the formation of positive charges on soil colloids.

Mineral particles in soil are listed in order of size as clay, silt, fine sand, coarse sand, and gravel.

Soil porosity refers to the amount of soil pores filled only with water.

Humus is formed by the breakdown of living plants and animals.

Soil aeration can be improved by compacting the land.

The four main properties of soil include texture, structure, porosity, chemistry, and color.

Small pores in clay soil lead to drought in good weather.

The percentage of sand, silt, and clay in a soil sample does not affect its texture or drainage.

Soil color is darker in low nutrient areas.

Loam soil has different amounts of sand, silt, and clay.

High humus content in soil results in black or brown color.

The soil triangle is used to determine the percentage of sand, silt, and gravel in a soil sample.

Red color in soil indicates high nutrient levels.

Soil structure refers to the pore space within an aggregate.

Flocculation occurs when silt, sand, and clay are held together by colloidal particles.

The type of soil texture can be determined by taking a handful of dry soil and adding water to it.