Types of coastal erosion | 2024 GCSE Geography Exams #gcse #geography #coast #erosion

2024 GCSE Geography exams are just 85 days away! Join me as we cover 90 facts in 90 days! This is day 6, today's topic... coastal erosion!

Coastal erosion is the wearing away of rocks by the sea, often due to destructive waves. There are four main types. Hydraulic action is caused by the power of the waves - air is forced into cracks in the rocks, and when the wave retreats this air rushes out, largening cracks and causing the rocks to break apart. Abrasion is where rocks are picked up by the waves and hurled at the cliffs. Attrition is where rocks being carried by the sea are knocked against each other, becoming smaller and rounder over time. Solution is where seawater dissolves certain types of rocks, such as chalk or limestone.

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