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waterfall formation
1/18/2023
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Waterfall formation hard rock soft rock rapids Sofler rock errodes more quickly. over hanging of hard plung pool erodes rock in s Waterfall Deep pluing pool The river flows over bands of less resistant (Sofler) and resistant (harder) rock. The less resistant rock is wom away quickly due to differential errosion) The river errodes the rock in 3 ways. Hydraulic Action which is when air is compressed into. the river bank causing materials to be dislodged. Abrasion - When the force of the water throws. bed load against the banks causing errosion. more Solution - When rocks react with acid in the Water The river undercuts the harder rock leaving behind an overhang which becomes unsuported and collapses into the plunge pool below. After the overhang falls, some of the rocks are swirled around the helps to form a deep by the river and this waterfall. The plung pook is also deepend during times of high discharge hydraulic action is most powerful. when Discharge - Is the volume of water in a river a point in given time. (mesured in 'cumees) The waterfall is moved upstream, the process. continues and a steep-sided back into the hillside. is gorge
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