Mammoth Memory

Hydraulic action – The movement of objects using water or liquids. With rivers it is the force of the river which can cause air to be trapped in cracks and crevices; the pressure weathers the banks and gradually wears them out

The water hydrant used a flicking  action (hydraulic action) to move objects using water.

The water hydrant used a flicking action (hydraulic action) to move objects using water.

hydraulic action in rivers

 

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