What is Core Theme 1 in WJEC GCSE Geography?

Core Theme 1, Landscapes and Physical Processes, is the first core theme of Unit 1 (Changing Physical and Human Landscapes), a 1-hour 30-minute written exam worth 35 percent of the GCSE. It covers what makes the landscapes of Wales and the UK distinctive, the processes and landforms of rivers and coasts, and drainage basins, flooding and river management, all examined through data response using maps, photographs and OS maps.

What river and coastal landforms do I need for WJEC Theme 1?

For rivers you need waterfalls and gorges, meanders, ox-bow lakes, floodplains and levees, and the processes of erosion, transportation and deposition. For coasts you need headlands and bays, caves, arches, stacks and stumps, cliffs and wave-cut platforms, and depositional landforms such as beaches, spits and bars, plus constructive and destructive waves and longshore drift.

What is a storm hydrograph?

A storm hydrograph is a graph showing how a river's discharge responds to a rainfall event. Its key parts are the rising limb (discharge increasing), the peak discharge (the maximum flow), the lag time (the gap between peak rainfall and peak discharge) and the falling or recessional limb (discharge returning to normal). A short lag time and high peak make a river flashy and flooding more likely.

How is river flooding managed in the WJEC course?

Flooding is managed by hard engineering and soft engineering. Hard engineering builds defences that control the river directly, such as dams and reservoirs, flood walls and embankments, and channel straightening. Soft engineering works with natural processes, such as afforestation, river restoration, floodplain zoning and flood warnings. A combination matched to the place is usually most effective and sustainable.

Why is OS map skill important for Theme 1?

Theme 1 is examined as data response, so you must read landscapes from resources. You need to use contour lines and spot heights to judge relief, identify river valleys and their stage, recognise coastal and river landforms, read land use from OS symbols, and give four-figure and six-figure grid references. Many marks come from describing what a resource shows, not just from recalled knowledge.

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Landscapes and Physical Processes (Core Theme 1): a complete overview for WJEC GCSE Geography Unit 1

A complete overview of Core Theme 1, Landscapes and Physical Processes, for WJEC GCSE Geography Unit 1: distinctive landscapes of Wales and the UK, river processes and landforms, coastal processes and landforms, and drainage basins, flooding and river management.

Generated by Claude Opus 4.814 min read3110-unit-1-theme-1Updated 2026-06-15

Reviewed by: AI editorial process; not yet individually human-reviewed

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What this covers
Distinctive landscapes
Rivers
Coasts
Drainage basins and flooding
Check your knowledge

What this covers

Core Theme 1, Landscapes and Physical Processes, is the first core theme of Unit 1: Changing Physical and Human Landscapes (a 1-hour 30-minute written exam, 35 percent of the GCSE). This overview ties the dot points together: distinctive landscapes, river processes and landforms, coastal processes and landforms, and drainage basins, flooding and management. The theme is data response, so revise the content and the OS map and photograph skills together.

Distinctive landscapes

A landscape is the visible character of an area, set by its relief, geology, drainage, soils, ecology and human features. WJEC focuses on upland landscapes (high, steep, thin soils, fast rivers, moorland - Snowdonia, the Brecon Beacons), lowland landscapes (low, flat, deep soils, slow rivers, intensive land use - the Vale of Glamorgan, East Anglia) and glaciated landscapes (U-shaped valleys, corries, ribbon lakes). Physical factors (geology, climate, weathering, glaciation) and human factors (farming, forestry, quarrying, reservoirs, settlement) combine to make each one distinctive.

Rivers

Rivers do three kinds of work: erosion (hydraulic action, abrasion, attrition, solution), transportation (traction, saltation, suspension, solution) and deposition. Down the course, vertical erosion in the upper course cuts a V-shaped valley with waterfalls; lateral erosion in the middle course forms meanders; and deposition in the lower course builds floodplains, ox-bow lakes and levees. The long profile flattens and the cross profile widens downstream.

Coasts

The coast is shaped by weathering, mass movement, erosion, transportation and deposition. Constructive waves (strong swash) build beaches; destructive waves (strong backwash) erode. Longshore drift carries sediment along the coast in a zig-zag. Erosional landforms include headlands and bays and the cave-arch-stack-stump sequence; depositional landforms include beaches, spits and bars.

Drainage basins and flooding

A drainage basin is an open system of inputs, stores, flows and outputs, edged by a watershed. The storm hydrograph (rising limb, peak discharge, lag time, falling limb) shows how quickly a river responds. Physical causes (heavy rain, snowmelt, steep impermeable ground) and human causes (deforestation, urbanisation) raise flood risk. Flooding is managed by hard engineering (dams, flood walls, channel straightening) and soft engineering (afforestation, river restoration, floodplain zoning, flood warnings).

Core Theme 1, Landscapes and Physical Processes, is the first core theme of WJEC Unit 1 (Changing Physical and Human Landscapes, a 1-hour 30-minute exam worth 35 percent). It covers four things. First, distinctive landscapes: upland, lowland and glaciated landscapes of Wales and the UK, shaped by physical factors (geology, climate, glaciation) and human factors (land use). Second, rivers: erosion, transportation and deposition, the V-shaped valley and waterfalls of the upper course, meanders in the middle course, and floodplains and ox-bow lakes in the lower course. Third, coasts: weathering, mass movement and erosion, constructive and destructive waves, longshore drift, and landforms of erosion (headlands and bays, caves, arches, stacks) and deposition (beaches, spits, bars). Fourth, drainage basins and flooding: the basin as an open system, the storm hydrograph (rising limb, peak discharge, lag time, falling limb), the physical and human causes of flooding, and hard and soft engineering to manage it. The whole theme is examined by data response, so OS map and photograph skills are essential.

Check your knowledge

What makes a landscape distinctive? (2 marks)
Name two upland and two lowland landscape features. (4 marks)
List the four processes of river erosion. (4 marks)
Explain the formation of a waterfall. (4 marks)
Contrast constructive and destructive waves. (4 marks)
Explain how a spit forms. (4 marks)
Label the parts of a storm hydrograph. (4 marks)
Give one hard and one soft engineering flood defence. (2 marks)

Solutions

Q1: Its particular combination of relief, geology, drainage, soils, ecology and human features makes it look different from other areas.
Q2: Upland: high, steep land, thin acidic soils, fast rivers, moorland. Lowland: low, flat land, deep fertile soils, slow meandering rivers, intensive farming and settlement.
Q3: Hydraulic action, abrasion, attrition and solution (corrosion).
Q4: Hard rock over soft rock; the soft rock is undercut, the overhang collapses, a plunge pool forms, and the waterfall retreats to leave a gorge.
Q5: Constructive: low, strong swash, weak backwash, builds beaches. Destructive: high and steep, weak swash, strong backwash, erodes the coast.
Q6: Longshore drift moves sediment along the coast; where the coastline changes direction the sediment builds out across the gap into a ridge with a recurved end and salt marsh behind.
Q7: Rising limb (discharge increasing), peak discharge (maximum flow), lag time (peak rain to peak flow) and falling/recessional limb (return to base flow).
Q8: Hard: a dam and reservoir or flood wall. Soft: afforestation or floodplain zoning.

Sources & how we know this

WJEC GCSE Geography (Wales) specification (3110) — WJEC (2019)