Geology

Geology

Q1. Sea sponge phases.

Q2. Sand is an example of a class of materials called granular matter. Sand is a naturally occurring, finely divided rock, comprising particles or granules ranging in size from 0.0625 (or 1/16) to 2 millimeters. An individual particle in this range size is termed a sand grain. The next smaller size class in geology is silt: particles below 0.0625 mm down to 0.004 mm in size. The next larger size class above sand is gravel; with particles ranging from 2 mm up to 64 mm (see grain size for standards in use). Sand feels gritty when rubbed between ...