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coast erosion

QuestionAnswer
hydraulic action erosive power of waves, fractures the rock enlarges joints weakens coastlines
abrasion load hits off coastline
attrition rock collide worn down pebbles become round
compression waves compress air in cracks
solution dissolved by salt
what are bays bays are curved indents on coastline formed from destructive waves eg liscannor bay
whats a headland a section of land that protrudes further into the sea than the surrounding coast eg mizen head slea head
how are they formed bays an headlands are formed where bands of hard rock and bands of soft are beside another
what is differential erosion as a destructive waves attack the coast the less resistant rock is eroded much faster
what are the processes hydraulic action and compression are the tow most common and effective processess
c ompressed air as the incoming waves hit off the coastline air is trapped and compressed, as the wave retreats the air escapes with an explosive effect
what is wave refraction shallow waters around the headlland create friction slowing own the wave flowing towards it. The section of wave in deeper water continues at its normal speed
Created by: Megan k