Petersburg, West Virginia. Petersburg is a city in Grant County, West Virginia, USA. The population was 2,467 at the 2010 census. It is the county seat of Grant County. Contents.
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. Although a soil could be all sand, all clay, or all silt, that's rare. Instead most soils are a combination of the three.
Answers. Best Answer: Well graded: soil grains are a range of sizes (equivalent to poorly sorted) Poorly graded: soil grains are all pretty much the same size (equivalent to well sorted) Residual soil: soil formed in place. Transported soil: Soil formed from somewhere else.