Respuesta :
Option B is correct. During a typical sandstorm, saltating sand grains reach a maximum height of 1m above the land surface
Wind is an exceptionally productive disintegration specialist, and its activity, especially in areas of bone-dry, semi-parched and desert environments, is liable for moving and saving enormous volumes of silt with the improvement of a normal breeze scene.
The distance across of the sand grains moved by the breeze midpoints somewhere in the range of 0.15 and 0.30 mm, for certain fine grains up to 0.006 mm, all particles less than 0.006 mm are delegated dust. A grain the size of the residue is conveyed up high and a grain the size of the sand is conveyed forward close to the ground by bouncing (see figure 1). As the molecule size expands, the fascination of gravity and air obstruction likewise increment.
The sand surface particles are shipped by the breeze in three ways:
- By drag: the thickest particles (500 - 2000 microns).
- By saltation: medium particles (100-500 microns).
- In suspension: the littlest and lightest particles (<100 microns, 0.2 mm).
The saltation moves the particles by little leaps, toward beginning of the breeze and typically doesn't eliminate them more than 1 centimeter over the ground. A singular grain moves onward determined by the breeze, until it bobs with a subsequent grain. Once in the air, it is conveyed forward by the breeze and attracted to the ground by gravity. It follows an illustrative way falling on the ground with a point somewhere in the range of 10º and 16º, and ordinarily voyaging brief distances.
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