They crash against the rock. Over time, this breaks the rock up
They throw sand, pebbles against the rock. This acts like sand paper and wears the rock away = abrasion
They force water and air into cracks in the rock. The air is compressed by the surging water and then the air expands explosively as the wave retreats, This weakens joints and cracks and causes the rock to shatter = hydraulic action
The sea water dissolves soluble material from the rock. This happens along limestone and chalk coasts when calcium carbonate is dissolved = solution
Rocks and boulders already eroded from the coast are knocked together and slowly worn into smaller and rounder pieces = attrition
These processes are important only at the base of the cliff.
Weathering processes attack the rest of the cliff causing landslips and rockfalls?
Waves approach the _____ at an angle due to the direction of the ____. The ______ carry material up the beach at the same angle (due to the wind) and then down at 90 º to the beach (due to the pull of______). This means ______ is carried along the beach in a zig zag pattern.
TRANSPORTATION Long Shore Drift (LSD) waves wind material coast gravity