Sand is a set of tiny fragments derived from the erosion of rocks and minerals of diverse nature -calcareous, granitic and quartz- and from successive sedimentation processes.
The desert is the product of the action of the wind and is composed of grains of almost always uniform dimensions , although depending on the place, the size can vary from 0.1 to 1 millimeter. This is because the wind is only capable of moving grains of those dimensions.
On the other hand, the sand on the beach is made up of grains whose dimensions are less uniform – between 0.1 and 2 millimeters -. The size of these grains is determined by the speed of the current that carries the materials.
