GEOLOGY

Detailed explanation-1: -Soil particles vary greatly in size, and soil scientists classify soil particles into sand, silt, and clay. Starting with the finest, clay particles are smaller than 0.002 mm in diameter. Some clay particles are so small, that ordinary microscopes do not show them. Silt particles are from 0.002 to 0.05 mm in diameter.

Detailed explanation-2: -Clay: less than 0.002mm. Silt: 0.002-0.05mm. Sand: 0.05-2mm. Stones: bigger than 2mm in size.

Detailed explanation-3: -Silt particles are 0.05 to 0.002 mm and feel similar to flour when dry. Clay particles are extremely fine-smaller than 0.002 mm. They feel sticky in your fingers when wet and clump to the point that you can’t see an individual particle without a microscope.

Detailed explanation-4: -Dry silt feels floury, and wet silt is slippery or soapy but not sticky. Dry clay forms hard lumps, is very sticky when wet, and plastic (like plasticene) when moist.

Detailed explanation-5: -The particles that make up soil are categorized into three groups by size – sand, silt, and clay. Sand particles are the largest and clay particles the smallest.