Tree limbs that fall into streams ... Small-scale undulations on the surface unconsolidated fine substrates such as silt and sand. These features are shaped by the action of flowing water in ...

Spring triggers increased pothole repair demands as thawing roads reveal damage caused by winter expansion and traffic stress ...

Two streams of water fall from small holes in reservoirs at the top. Those streams fall through two metal cylinders, called inductors, not making contact with them. A stream of falling water ...