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Coastal eroision
coasts
Question | Answer |
---|---|
how is coastal erosion caused | by destructive waves hitting off the coastline |
explain the term hard coasts | resistant rock structures which can be natural or human-made |
what are constructive waves | are small, low energy waves that break onto the shore of beaches |
what are destructive waves | are large, powerful waves that are generated during high winds or storms |
give 3 processes of erosion | Hydraulic action, abrasion, attrition |
explain briefly what hydraulic action is | refers to the erosive power of waves crashing against the coastline. it fractures rock, enlarges joints and washes away loose pieces of debris |
explain briefly what abrasion is | it reefers to the sea using its load to erode the coastline. rocks, pebbles and other materials are carried by waves and thrown against the coastline |
give 4 examples of land forms caused by coastal erosion | blowholes, bays and headlands, sea stumps,cliffs and wave-cut platform |
give 2 examples of where you would see a bay in ireland | dublin bay and galway bay |
what 2 rock types are associated with bays and headlands | basalt and shale |