Bulk Density is the weight of soil per unit volume, including both solids and voids.

The Unified Soil Classification System (USCS) is the most widely used soil classification system in the United States. It is based on the soil's texture, plasticity, and gradation.

Compaction is the process of increasing the density of soil by applying mechanical energy. This can be done using various methods, such as rolling, tamping, or vibrating.

Permeability is the ability of soil to allow water to flow through it. It is influenced by factors such as soil texture, structure, and density.

Shear Strength is the ability of soil to resist deformation under load. It is influenced by factors such as soil type, density, and moisture content.

Consolidation is the gradual settlement of soil under sustained load. It is caused by the expulsion of water from the soil pores.

Clay is a soil type known for its high plasticity and low permeability. It is composed of very fine particles that have a high surface area.

Desiccation is the process of removing water from soil to reduce its moisture content. This can be done through evaporation, transpiration, or drainage.

Capillary Action is the ability of soil to hold water against the force of gravity. It is caused by the attraction between water molecules and soil particles.

Angle of Internal Friction is the angle at which a soil can withstand a shearing force without collapsing. It is influenced by factors such as soil type, density, and moisture content.

Sand is a soil type known for its high permeability and low plasticity. It is composed of relatively large particles that have a low surface area.

Irrigation is the process of adding water to soil to increase its moisture content. This can be done through various methods, such as flooding, sprinkling, or drip irrigation.

Cohesion is the ability of soil to resist erosion. It is caused by the attraction between soil particles.

Pedogenesis is the process of soil formation. It involves the physical, chemical, and biological weathering of rocks and minerals to form soil.

Organic Soil is a soil type known for its high organic matter content and dark color. It is formed from the decomposition of plant and animal matter.