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cavitation (earth science)

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Cavitation (earth Science)


In hydraulics, erosion of rocks caused by the forcing of air into cracks. Cavitation results from the pounding of waves on the coast and the swirling of turbulent river currents, and exerts great pressure, eventually causing rocks to break apart.

The process is particularly common at waterfalls, where the turbulent falling water contains many air bubbles, which burst and send shock waves into the rocks of the river bed and banks. In addition, as water is forced into cracks in the rock, air within the crack is compressed and literally explodes, helping to break down the rock.

© Research Machines plc 2008. All rights reserved. Helicon Publishing is a division of Research Machines plc.


 
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