grain size classification

Grain size classification is a way to categorize soil or sediment based on the size of its particles. It helps determine whether the material is made up of tiny clay particles, silt, small sand grains, or larger gravel pieces. This classification affects the soil's properties, like how well it drains water or supports plant growth. For example, coarse materials like gravel allow quick drainage, while fine particles like clay retain water better. Understanding grain size is important for construction, gardening, and environmental science because it influences how the soil behaves and interacts with water and nutrients.