Edexcel GCSE Geography B (1GB0) · The Changing Landscapes of the UK
Mini-Lesson
The Changing Landscapes of the UK
This mini-lesson covers the UK's Evolving Physical Landscape: how the UK's geology shapes its scenery, the coastal processes and landforms, the river processes and landforms, and how these landscapes are managed.
Work through each screen, answer the questions as you go (multiple-choice, short-answer and games) and collect ⭐ stars. Press Start when you're ready.
UK physical landscape
Geology shapes the UK
The UK's varied scenery is controlled by its underlying geology. Rock type divides broadly into two:
Igneous & metamorphic rock (e.g. granite, slate) — hard and resistant. Found mostly in the north and west (Scotland, Wales, Lake District), forming rugged upland landscapes.
Sedimentary rock (e.g. chalk, clay, limestone) — generally softer. Found mostly in the south and east, forming gentler lowland landscapes.
A rough line from the River Tees in the north-east to the River Exe in the south-west (the Tees–Exe line) separates the harder uplands to the north-west from the softer lowlands to the south-east.
Key idea: resistant rock erodes slowly and stands proud as uplands; softer rock erodes faster and forms lower ground. Human activity (farming, settlement, industry) has since reshaped both.
Coastal processes
How the sea shapes the coast
At the coast, waves erode, transport and deposit material. The four erosion processes are:
Hydraulic action — the force of water and trapped, compressed air blasting into cracks.
Abrasion — waves fling pebbles and sand at the cliff, wearing it away.
Attrition — rock fragments knock together, becoming smaller and rounder.
Solution — slightly acidic seawater dissolves soluble rock such as chalk/limestone.
Eroded material is then moved along the coast by longshore drift: waves hit the beach at an angle, so swash carries sediment up diagonally while backwash drags it straight down under gravity — a zig-zag that shifts it along the shore.
Quick check
Which process?
?Over many years, angular pebbles on a beach become small and rounded. Which coastal erosion process best explains this?
Coastal landforms
Coastal landforms: erosion & deposition
Where hard and soft rock meet the coast, differential erosion creates headlands (hard rock, jutting out) and bays (soft rock, sheltered). On a headland, erosion carves the famous sequence:
cave → arch → stack → stump. Deposition builds beaches in bays and spits where the coast bends (longshore drift drops sediment in deeper, calmer water).Quick check
Getting the order right
?What is the correct order in which these erosion landforms develop on a headland?
River processes
Rivers: from source to mouth
A river's long profile runs from its source (upland) to its mouth (sea). Its energy is used differently along the way:
Upper course: steep, vertical erosion cuts deep V-shaped valleys. Lower course: gentle, the river deposits and meanders across a wide floodplain.
Rivers erode by hydraulic action, abrasion, attrition and solution, and transport load by traction, saltation, suspension and solution.
River landforms
River landforms
Waterfall — forms where a band of hard rock lies over soft rock; the soft rock is undercut, hard rock collapses, and a gorge retreats upstream.
Meanders — the river erodes the outer bank (fast flow) forming a river cliff, and deposits on the inner bank (slow flow) forming a slip-off slope.
Oxbow lake — a meander neck is eventually cut through; the loop is cut off and left as a curved lake.
Floodplain & levées — flood water deposits fine alluvium across the valley floor; coarser material builds raised levées at the banks.
Watch out: on a meander, the outer bend has the fastest flow and most erosion; the inner bend is slow and gains deposition. Don't swap them.
Explain it
Your turn — meanders
✎Explain how a meander erodes and deposits material. Use the words outer bank, inner bank, erosion and deposition.
Model answer
On the outer bank the water is deeper and flows faster, so erosion (abrasion and hydraulic action) undercuts the bank to form a steep river cliff.
On the inner bank the water is shallower and slower, so it loses energy and deposition builds a gentle slip-off slope of sand and shingle.
Over time this widens the meander and can eventually form an oxbow lake.
Sort it
River or coastal landform?
Tap a landform, then tap the box it belongs in.
🌊 Coastal
🏞️ River
Managing landscapes
Managing coasts and rivers
Both coasts and rivers are managed to reduce erosion and flooding, using hard and soft engineering:
Coastal hard — sea walls, groynes (trap sediment moved by longshore drift), rock armour, gabions.
Coastal soft — beach nourishment, managed retreat (deliberately let low-value land flood/erode).
River hard — embankments/flood walls, dams & reservoirs, channel straightening.
River soft — floodplain zoning, river restoration, afforestation, washlands.
Misconception:managed retreat is a deliberate decision to stop defending a stretch of coast — a chosen strategy, not a failure.
Sort it
Hard or soft engineering?
Tap the correct type of engineering for each strategy.
Quick check
Choosing a defence
?A seaside town is losing its beach because longshore drift keeps carrying sand away along the coast. Which hard-engineering defence traps that moving sediment and rebuilds the beach?
Located example
Example: the Holderness Coast
The Holderness Coast (East Yorkshire) is one of the fastest-eroding coastlines in Europe, retreating on average about 1.5–2 metres per year.
Why so fast? The cliffs are soft boulder clay (glacial till), which slumps when saturated, and destructive waves have a long North Sea fetch.
Management: the town of Mappleton is protected by two rock groynes and rock armour (built 1991).
Conflict: the groynes trap sediment, so the coast down-drift (e.g. Great Cowden) is starved of beach material and erodes even faster.
Exam tip: a good answer names the place, gives figures (~2 m/yr, Mappleton groynes 1991) and explains a conflict between different users of the coast.
Quick check
Understanding the example
?At Mappleton, groynes trap sediment and protect the town. What is the main knock-on problem this creates for the coast further along (down-drift)?
Recap
The key ideas to know
UK geology: resistant igneous/metamorphic uplands (NW) vs softer sedimentary lowlands (SE), split by the Tees–Exe line.
Coastal processes: hydraulic action, abrasion, attrition, solution; longshore drift moves sediment along the coast.