CCEA GCSE Geography Unit 1 Theme B Coastal Environments: waves, landforms, flooding and coastal management

What this theme demands

Coastal Environments is the second of the four physical themes in Unit 1 Understanding Our Natural World, and is worth a quarter of the unit. It mirrors the rivers theme: it builds from processes (waves), through the landforms they create, to the human story of flooding, pressure and management. This overview ties the dot-point pages together and shows how the resource-based paper rewards each skill.

The building blocks of the theme

The theme is best learned as a chain, because each idea depends on the one before.

• Processes and waves. Constructive waves (strong swash) build beaches; destructive waves (strong backwash) erode them. The sea erodes by hydraulic action, abrasion, attrition and solution, and transports sediment by longshore drift.
• Landforms. Erosion forms headlands and bays, then caves, arches, stacks and stumps; deposition forms beaches and spits.
• Flooding and people. Storm surges and rising sea levels cause coastal flooding; people value the coast in competing ways, creating conflict.
• Management. Hard and soft engineering, weighed for cost, effectiveness, environmental impact and sustainability.
• Case study. A named coast such as Holderness to explain erosion, management and conflict with precise detail.

The big idea: erosion in one place, effects in another

The most powerful theme of coastal study is that the coast is a connected system. Sediment moved by longshore drift links one stretch to the next, so building groynes to protect one town starves the next of sediment and speeds its erosion. Recognising these knock-on effects, rather than treating each site in isolation, is what lifts an answer from description to evaluation and is the heart of the case study.

The skills the paper rewards

Theme B tests all three assessment objectives. AO1 is the processes and definitions. AO2 is explaining formation and evaluating management. AO3 is the map and photo skills: identifying coastal landforms on an ordnance survey map, reading the direction of longshore drift, and interpreting photographs of cliffs and beaches.

Check your knowledge

A mix of recall questions covering the whole theme. Attempt them, then check the solutions.

1. What three factors control the size of a wave? (3 marks)
2. Which wave type builds up a beach, and why? (2 marks)
3. Name the four processes of marine erosion. (4 marks)
4. Explain the zig-zag movement of longshore drift. (2 marks)
5. Put the headland erosion landforms in order. (2 marks)
6. What transport process builds a spit? (1 mark)
7. What is a storm surge? (2 marks)
8. Give one hard and one soft coastal engineering method. (2 marks)
9. Why do groynes increase erosion downdrift? (1 mark)