Because of the way it moves over the sand. It travels by keeping the majority of it's body off the hot sand. Using a rippling motion, it travels 'sideways' to the direction it's facing (hence the name sidewinder)
Soluble means something will dissolve. Sand does not dissolve in water, salt does.
The word you are looking for is "sedimentation." Sedimentation is the process by which sand or particles settle out of wind or water and form layers or deposits over time.
The sand is being cooled by the water as it washes over it, and then again as the sun evaporates the water away.
Being dry means free of any liquids. Since water is a liquid and sand is a solid, sand is actually much drier than water.
water has a greater specific heat than sand becasue it takes longer to heat up than sand does
This is most likely due to gravity. As water travels over the sand from a wave or swift tide, water begins to drain down through the drier sand on the shore. Gravity pulls the water downward under the top layer of sand.
Density. Gold has an extremely high density relative to the rest of the sand in the pan and will therefore fall to the bottom as one swirls the pan around. The water is there to provide a means by which to circulate the dirt mixture and eliminate the "sand" (the sand gets suspended in the water and spills over the sides of the pan as it is swirled). And that's pretty much panning for gold.
Density. Gold has an extremely high density relative to the rest of the sand in the pan and will therefore fall to the bottom as one swirls the pan around. The water is there to provide a means by which to circulate the dirt mixture and eliminate the "sand" (the sand gets suspended in the water and spills over the sides of the pan as it is swirled). And that's pretty much panning for gold.
No. The water is in the sand.
type water and put over his body
Erosion from the water washing the sand away.