Tide
a water fall
a water fall
a water fall
a water fall
waves
Tide.
waves
a water fall
a water fall
vertical movement of a body of water called
The vertical movement of the surface of a body of water is called "tidal fluctuation" or simply "tide". Tides are primarily caused by the gravitational pull of the moon and to a lesser extent the sun, resulting in the cyclic rise and fall of the water level.
a water fall