Welcome to this deck on Coastal Landscapes. This is an optional topic for Paper 1 of your AQA GCSE Geography exam, so it's important to check with your teacher that this is one of the topics your school has chosen to study. In this deck, we'll explore the powerful forces that shape our coastlines, looking at the processes of erosion, transportation, and deposition. You'll learn how these processes create dramatic landforms like cliffs, stacks, spits, and bars.

Let's begin with coastal erosion, which is the wearing away and breaking up of rock along the coast. The sea is a relentless force, and it uses four main methods to attack the land. Understanding these four processes is essential for explaining how coastal landforms are created, which is a common exam requirement.

The first process of coastal erosion is hydraulic action. This is the sheer power of the waves as they smash against a cliff. Water is forced into cracks in the rock, compressing the air inside. As the wave retreats, the air expands explosively, which weakens the rock and can break off pieces over time. Think of it like a constant series of mini-explosions shattering the rock from within.

The second process is abrasion. This is when waves pick up and hurl sediment, like sand and pebbles, against the base of a cliff. This material acts like sandpaper, grinding away at the cliff face and smoothing it down. The larger the sediment and the more powerful the waves, the faster the rate of abrasion.