GradeGen

Erosion caused by the force of moving water, including the compression of air in rock cracks.

Erosion caused by the force of flowing water breaking material away from a river’s bed and banks.

Hydraulic action is erosion by the force of the water itself. Flowing water strikes the bed and banks and breaks material away. The water provides the force; it does not need stones to scrape the rock.

Erosion in which the force of flowing water breaks material away from a river’s bed and banks.

Hydraulic action: the force of moving water breaks material away from the bed and banks.

Erosion caused by the force of moving water, including water compressing air in cracks and helping to break rock apart.

Erosion caused by the force of water striking coastal rock and exerting pressure in cracks.

Hydraulic action: the force of water striking the cliff and exerting pressure in cracks helps loosen and break rock.

Erosion caused by the force of moving water dislodging material from a river’s bed or banks.

Hydraulic action is erosion by the force of water. Fast-flowing river water can loosen material from the bed and banks. At the coast, waves strike cliffs and force water and air into cracks.

Erosion caused by the force of water striking rock and entering its cracks.

Erosion caused by the force of moving water acting on rock, including forcing water or air into cracks.