Calder River

20 Marks for identifying 4 places where river erosion is taking place. Can you see where erosion is taking place. Then determine what sort from the following....

The four main forms of river erosion

• Hydraulic action - the force of the river against the banks can cause air to be trapped in cracks and crevices. The pressure weakens the banks and gradually wears it away.

• Abrasion - rocks carried along by the river wear down the river bed and banks.

• Attrition - rocks being carried by the river smash together and break into smaller, smoother and rounder particles.

• Solution - soluble particles are dissolved into the river

Need a bit of help? Click for Calder Erosion