Sand

Sand is a combination of broken-down grains of rock and minerals that forms from physical or chemical weathering. It may also contain biogenic material, like shells, coral, seaweed, or more. Grains smaller than sand are silt and grains larger are gravel. The word sand comes from the Proto-Germanic word sandam. [2]

Composition

It ranges in size from 1/16th to 2mm.[1]

References

[1] Sepp, Siim. "What is Sand" SandAtlas.org, Retrieved April 10, 2021, from https://www.sandatlas.org/sand/

[2] Harper, Douglas. “Sand.” Online Etymology Library, Etymonline.com, from www.etymonline.com/word/sand.

[3] NOAA. "How does sand form?" National Ocean Service, oceanservice.noaa.gov, from https://oceanservice.noaa.gov/facts/sand.html