AQA GCSE Geography Paper 1, June 2025: Question 3

15 marks · Medium difficulty · Extended Response

Answer questions on coastal processes, sand dune succession, stack formation, and the effectiveness of hard engineering coastal management strategies.

Practise this question

Question

Question 3 covers coastal landscapes in the UK across six parts: 03.1 is a multiple-choice question on the wave process describing water crashing into cliffs; 03.2 and 03.3 use Figure 11, a cross-section of a sand dune ecosystem showing distance from the sea, percentage vegetation cover, number of plant species, and soil pH across embryo, fore, yellow, grey, and mature dunes; 03.4 provides a data table to plot one point onto Figure 12, a scattergraph plotting plant species versus vegetation cover; 03.5 asks for an explanation and labelled diagram of stack formation; and 03.6 provides Figure 13 showing photographs of rock armour/gabions and timber groynes/sea wall to discuss the effectiveness of hard engineering coastal management.
Question text

03.1 Which term is used to describe the force of waves crashing into the cliffs?

Shade one circle only.

[1 mark]

A Abrasion

B Attrition

C Hydraulic power

D Solution

Study Figure 11, a cross section of a coastal sand dune area, with vegetation

and soil data.

Figure 11

Embryo Yellow

dune dune Mature

dune

Fore Grey

dune dune

Dune

slack

Sea

0 30 m Water table

Distance from

0 30 60 90 120 150 180 210

sea (metres)

Percentage

vegetation cover 0 25 75 80 70 95 100 100

Number of

02 3 6 5 12 14 22

plant species

Soil pH (acidity) 8.5 8.4 23 8.2 7.2 7.0 7.5 6.5

03.2 Using Figure 11, calculate the median soil pH.

[1 mark]

(22)

03.3 Using Figure 11, describe changes in vegetation from the embryo dune to the

mature dune.

[2 marks]

Figure 12 is a scattergraph showing percentage vegetation cover and number of

plant species.

03.4 Plot the following data on Figure 12.

[1 mark]

Percentage vegetation cover 80

Number of plant species 6

Figure 12

Number

of plant 15

species

0 20 4024 60 80 100

Percentage vegetation cover

03.5 Explain how a stack is formed in a coastal landscape.

Use one or more labelled diagrams. 8

[4 marks]

(23)

Study Figure 13, photographs of hard engineering strategies used to manage

the coastline.

Figure 13

03.6 Discuss the effectiveness of using hard engineering strategies to manage the

coastline.

Use Figure 13 and your own understanding.

[6 marks]

(24) …

Extra space …

End of Question 3

Question 4 River landscapes in the UK

Mark scheme

Show the mark scheme Mark scheme for Question 3: 03.1 awards 1 mark for C (Hydraulic power); 03.2 awards 1 mark for 7.5; 03.3 awards 2 marks for describing changes such as increase in vegetation cover and plant species diversity; 03.4 awards 1 mark for accurately plotting the point (80, 6) with an 'x'; 03.5 is a 4-mark level of response question with indicative content detailing the sequence of crack, cave, arch, and stack formation under hydraulic action, abrasion, and weathering, with credit for labelled diagrams; 03.6 is a 6-mark level of response question with indicative content evaluating hard engineering methods like groynes, rip-rap, sea walls, and gabions based on their costs, durability, effectiveness, and environmental impacts.

Section C

Total

Qu Pt Marking guidance

marks

03 1 Which term is used to describe the force of waves crashing into the 1

cliffs?

C Hydraulic power

No credit if two or more statements are shaded.

AO1 – 1 mark

03 2 Using Figure 11, calculate the median soil pH. 1

7.5

AO4 – 1 mark

03 3 Using Figure 11, describe changes in vegetation from the embryo dune to 2

the mature dune.

2x1

The (percentage of ) vegetation (cover) increases across the dune / The

embryo dune has 25% cover whereas the mature dune has 100% cover (1)

The number of plant species increases across the dune /The embryo dune has

2 species whereas the mature dune has 22 species (1)

The embryo dune has very little vegetation whereas the mature dune has much

more plant cover (1).

The vegetation increases in height across the dune (1)

Vegetation changes from grasses to trees (1).

The vegetation changes from grasses on the embryo dune to shrubs on the

grey dune (1), then changes to woodland on the mature dune (d)(1).

Note that 2 changes are required for 2 –marks – 8035/1 –

AO4 – 2 marks

03 4 Plot the following data on Figure 12. 1

Correct plotting of point.

– – 8035/1 –

AO4 – 1 mark

03 5 Explain how a stack is formed in a coastal landscape. 4

Use one or more diagrams.

Level Marks Description

2 3–4 AO1 – Demonstrates accurate knowledge about coastal

(Clear) erosion processes and stack formation.

AO2 – Shows a clear geographical understanding of

the interrelationships between coastal environments

and processes. Explanations are developed.

1 (Basic) 1–2 AO1 – Demonstrates limited knowledge of coastal

erosion processes and stack formation.

AO2 – Shows limited geographical understanding of the

interrelationships between coastal environments and

processes. Explanations are partial.

0 No relevant content

• Level 2 (clear) responses are likely to contain linked statements showing

understanding of the processes involved and the sequence of formation.

Diagram(s) will be labelled and clear. Appropriate geographical terminology.

• Level 1 (basic) responses will comprise simple ideas with limited or partial

sequence and little reference to the processes involved. Diagrams may be

unlabelled or unclear. Geographical terminology will be limited.

• Max lower L2 if diagram is not used.

• Credit full marks at L2 if annotated diagram clearly shows formation.

Indicative content

• The command is ‘explain’, so responses should provide a reasoned account

of how and why a coastal stack is formed.

• Where headlands extend into the sea, waves attack vertical lines of 29

weakness in the rock/faults.

• Processes such as hydraulic action and abrasion widen these faults into

cracks and eventually the waves will penetrate deeply enough to create

caves. Over time, the cave will be eroded into an arch, accessible to the sea

on both sides.

• Weathering will also play a role, with physical weathering processes such as

freeze thaw and salt crystallisation and chemical processes such as

carbonation weakening the rock surrounding the cave or arch making it more

susceptible to mass movement and collapse.

• Finally, the erosion and weathering continues and the arch collapses leaving

behind a stack (a vertical column of rock).

• These stacks can be attacked further, and eventually the stack may collapse

to leave a low-lying stump.

• Credit the full sequence of landform development (cave, arch, stack, stump).

However, it is not necessary to include stump to be awarded full marks.

No credit for identification of processes unless related to stack formation

– – 8035/1 –

30 Labelled and annotated diagram(s) can substitute for written text, showing the

sequence of changes and processes involved.

The diagram above is worthy of 4 marks.

– – 8035/1 –

AO1 – 2 marks

AO2 – 2 marks

03 6 Discuss the effectiveness of using hard engineering strategies to manage 6

the coastline.

Use Figure 13 and your own understanding.

Level Marks Description

3 5–6 AO2 – Shows thorough geographical understanding

(Detailed) of hard engineering strategies used to protect

coastlines against erosion.

AO3 – Demonstrates thorough application of

knowledge and understanding by making reasoned

assessment of the effectiveness of coastal

management strategies.

2 3–4 AO2 – Shows clear geographical understanding of

(Clear) hard engineering strategies used to protect

coastlines against erosion.

AO3 – Demonstrates reasonable application of

knowledge and understanding by making clear

assessment of the effectiveness of coastal

management strategy(ies).

1 1–2 AO2 – Shows limited geographical understanding of

(Basic) one or more hard engineering strategy(ies) used to

protect coastlines against erosion.

AO3 – Demonstrates limited application of

knowledge and understanding by making basic

assessment of the effectiveness of coastal

management strategy(ies). 31

0 No relevant content.

• Level 3 (detailed) responses will be developed responses clearly

assessing the effectiveness of hard engineering coastal management

strategies. Appropriate terminology will be used. Appropriate use of Figure

13.

• Level 2 (clear) responses are likely to show understanding of coastal

management strategy(ies) and their effectiveness. Some assessment and

some geographical terminology may be evident. Likely to use Figure 13.

• Level 1 (basic) responses will be simple statements with limited

understanding or development. May consist of listed points or random

statements about general coastal management strategies. Answer may be

largely reliant on Figure 13.

• Max L2 for answers that refer to a single strategy. Full marks available for

assessment of two or more strategies.

Indicative content

– – 8035/1 –

• Understanding of hard engineering schemes, which involve using artificial

structures to control natural processes. These are designed to reduce wave

energy or create a barrier between the land and sea, so storm waves can’t

32 reach the cliffs.

• Application of understanding to Figure 13, showing coastal management in

the form of gabions, rip rap or rock armour, a sea wall and groynes. Expect

some assessment of the costs and benefits/effectiveness of these

approaches. Other types of hard engineering may also be credited.

• Figure 13 shows rock groynes or barriers that are built down the beach at

right angles to the coastline. They are designed to stop material being

moved along the beach by longshore drift. They work by building up the

amount of sand and shingle on the updrift side. They act as a buffer against

wave attack, helping to protect the cliffs. The groynes appear to be trapping

beach material effectively, providing protection to the coastline.

• Groynes create a wider beach, which can be popular with tourists and boost

local economy. They reduce the risk of damage, making residents and local

business feel more secure. They are not too expensive, and if well

maintained, can last up to 40 years. However beaches may be washed

away and cliffs eroded beyond the final groyne, as they are starved of beach

material.

• Sea walls aim to protect the coast using concrete, steel and/or stone. A sea

wall protects the base of cliffs, land and buildings against erosion. Also, it

can prevent coastal flooding in some areas. It gives people a sense of

security. If well maintained, sea walls can last for many years, but they can

be undercut by wave scour over time. Sea walls do not impede the

movement of sediment downdrift, so they do not disadvantage other areas.

• However they are expensive to build. Curved sea walls reflect the energy of

the waves back to the sea. This means that the waves remain powerful.

Over time the wall may begin to erode and the cost of maintenance is high.

• Gabions are wire cages filled with rocks that can be built up to support a cliff

or provide a buffer against the sea. Often constructed on site using local

pebbles.

• They are cheap to produce and flexible in the final design. Can improve

drainage of cliffs. Will eventually become vegetated and merge into the

landscape. Much cheaper than sea walls, rock armour or groynes. Ideal as

a quick-fix solution. For the cost, they are good value for money, as they

may last 20–25 years.

• However, gabions are unsightly, especially after they have been in the

water for a long time and the cages have started to rust. Equipment can be

difficult to source. Both the cage and its contents will deteriorate over time,

leading to more expense.

• Rip rap/rock armour consists of massive blocks of natural rock piled up at

the base of a cliff. The rocks are dumped on top of each other leaving gaps

between them that allow water through. The rock armour protects the base

of the cliffs from erosion. They disperse the energy of the waves. Structure

is quick to build and easy to maintain. Much cheaper than a sea wall. If well

maintained, rock armour lasts a long time. It is versatile, as it can be placed

in front of a sea wall to lengthen its lifespan or used to stabilise slopes on

sand dunes.

• However , they look different to the local geology, as the rock has been

imported from other areas. The rocks are expensive to transport.

• Credit other hard engineering strategies, including revetments, offshore

barriers and reefs. – – 8035/1 –

• Overall assessment of hard engineering strategies. Sea walls, gabions,

groynes and rock armour are effective solutions which help reassure the

coastal community. However, they are expensive to install and maintain. In 33

addition to this, by installing hard engineering solutions in one place this can

have a detrimental effect further along the coast.

AO2 – 3 marks

AO3 – 3 marks

How to answer it

Coasts Revision Guide: Processes, Dunes, Stacks & Management

📋 What this question tests

This question assesses core knowledge and skills across AQA GCSE Geography (Living with the physical environment – Coastal landscapes in the UK):

  • Recall of Marine Processes: Identifying specific types of coastal wave erosion (AO1).
  • Fieldwork & Ecosystem Skills: Calculating medians and reading patterns of sand dune plant succession / psammoseres (AO4).
  • Cartographic / Graphical Skills: Accurate plotting of points on a dual-variable scattergraph (AO4).
  • Landform Explanation & Diagram Skills: Explaining sequential erosional development from cracks to arches and stacks using annotated diagrams (AO1 & AO2).
  • Evaluative Judgment: Assessing the effectiveness, trade-offs, and environmental costs of hard engineering strategies using photo evidence and case knowledge (AO2 & AO3).
Question 03.1 • 1 Mark

Wave Erosion Process

Which term is used to describe the force of waves crashing into the cliffs?

✅ Correct Answer

C – Hydraulic power

Award 1 mark for shading option C. Zero credit if more than one circle is shaded.

💡 Key Definitions to Remember

  • Hydraulic power (action): The sheer force of water hitting the cliff, compressing trapped air in cracks until the rock shatters.
  • Abrasion: Pebbles/sand scraping against the cliff like sandpaper.
  • Attrition: Rocks in the sea knocking against each other, becoming smaller and rounder.
  • Solution: Chemical dissolving of rocks like chalk or limestone by slightly acidic seawater.
Question 03.2 • 1 Mark

Calculating Median Soil pH

Using Figure 11, calculate the median soil pH.

📐 Step-by-Step Calculation

  1. Step 1: Extract the non-blank pH values from the table in Figure 11:
    8.5, 8.4, 8.2, 7.2, 7.0, 7.5, 6.5 (7 values total).
  2. Step 2: Put the values in numerical order (lowest to highest):
    6.5, 7.0, 7.2, 7.5, 8.2, 8.4, 8.5
  3. Step 3: Find the exact middle value (the 4th value):
    Median = 7.5

❌ Common Errors

  • Forgetting to order the numbers: Picking the 4th number as it appears in the table (which was 7.2) instead of reordering first.
  • Calculating the mean: Adding all values up and dividing by 7 (gives ~7.6) instead of finding the median position.
Question 03.3 • 2 Marks

Changes in Vegetation Across a Dune System

Using Figure 11, describe changes in vegetation from the embryo dune to the mature dune.

✅ Acceptable Points (Any Two for 2 Marks)

  • Vegetation cover increases: Embryo dune has only 25% cover, while mature dune reaches 100% cover [1 mark].
  • Number of plant species increases: Rises from 2 species at the embryo/fore dune stage to 22 species at the mature dune [1 mark].
  • Plant type/height changes: Shifts from small hardy grasses (marram grass) to shrubs in grey dunes, and eventually mature woodland/trees [1 mark].

🧠 Exam Technique: "Describe changes"

  • State the direction of change (e.g., increases or diversifies).
  • Quote comparative data from the starting point (embryo dune at 30 m) to the end point (mature dune at 210 m) to guarantee full marks.
  • Do not explain why the plants change (e.g. humus buildup); the command word is strictly describe.
Question 03.4 • 1 Mark

Plotting Data on a Scattergraph

Plot the following data on Figure 12: Percentage vegetation cover = 80, Number of plant species = 6

✅ Accurate Plotting Guide

  • Locate 80 on the horizontal x-axis (Percentage vegetation cover).
  • Look at the vertical y-axis scale: 0 to 5 has 5 small squares, so 1 small square = 1 species.
  • Go up from 80 to 1 small square above 5 (= 6).
  • Mark with a neat, clear × or dot.

❌ Common Trap

Plotting the point at 6 along the horizontal axis or misreading the vertical grid lines (e.g. treating each grid square as 2 units instead of 1 unit).

Question 03.5 • 4 Marks

Formation of a Coastal Stack

Explain how a stack is formed in a coastal landscape. Use one or more labelled diagrams.

💡 The Sequence to Explain (AO1/AO2)

  1. Fault/Crack: Waves attack vertical lines of weakness (faults/joints) in a resistant headland via hydraulic action and abrasion.
  2. Cave: Repeated erosion widens the cracks into a hollowed cave.
  3. Arch: Marine erosion cuts through both sides of the headland (or two caves join back-to-back), creating a natural arch.
  4. Collapse to Stack: Sub-aerial weathering (e.g. freeze-thaw) and gravity weaken the arch roof. Unsupported, the roof collapses into the sea, leaving an isolated vertical pillar of rock called a stack.

✏️ What Your Diagram Must Show

Examiner Rule: Maximum Level 1 (2 marks) if no diagram is drawn!

Draw a clear sequence of sketches or a 3D block headland diagram with annotations:

  • Sketch 1: Headland with a crack widening into a cave at sea level (annotated: "Hydraulic action widens crack").
  • Sketch 2: Cave breaking through headland into an arch (annotated: "Cave erodes through headland").
  • Sketch 3: Collapsed arch roof with falling debris, leaving an isolated rock pillar detached from headland (annotated: "Roof collapses due to gravity & weathering → Stack formed").

🏆 Mark Scheme Level Descriptors

  • Level 2 (3–4 marks): Linked sequence showing clear understanding of processes (marine erosion + sub-aerial weathering). Uses correct terms and includes clear, annotated diagrams.
  • Level 1 (1–2 marks): Simple statements of parts of the sequence (e.g., "cave gets bigger into an arch and falls down"). Diagrams absent or unlabelled.
Question 03.6 • 6 Marks

Evaluating Hard Engineering Coastal Defences

Discuss the effectiveness of using hard engineering strategies to manage the coastline. Use Figure 13 and your own understanding.

🔎 Evidence from Figure 13

  • Photo 1 (Left):
    • Gabions: Wire mesh cages filled with rocks, stacked at the cliff foot to stabilise slopes and absorb wave energy.
    • Rock Armour (Rip-rap): Large granite boulders dumped along the beach edge to break wave energy.
  • Photo 2 (Right):
    • Groynes: Wooden barriers built at right angles down the beach to trap sediment moved by longshore drift.
    • Concrete Sea Wall: Curved wall reflecting wave energy back out to sea.

⚖️ Balanced Assessment Structure

  • Arguments for Effectiveness (Pros):
    • High degree of protection for valuable infrastructure, cliff-top homes, and tourism.
    • Groynes widen beaches, which not only absorbs wave power naturally but also boosts local seaside tourism.
    • Long lifespan: concrete sea walls and rock armour can protect coasts for 30–50+ years.
  • Arguments against Effectiveness (Cons/Limitations):
    • Extremely expensive: Sea walls cost around £5,000–£10,000 per metre to build and maintain.
    • Terminal Groyne Syndrome: Groynes starve downdrift beaches of sediment, drastically increasing erosion rates further along the coast.
    • Aesthetics: Gabions and concrete walls look unnatural, can rust, and spoil the coastal scenery.

🧠 How to Score Level 3 (5–6 Marks)

  • Rule 1 – Use Both Stimulus & Own Knowledge: Explicitly name defences visible in Figure 13 (rock armour, gabions, groynes, sea walls) AND add your own understanding.
  • Rule 2 – Evaluate "Effectiveness": Don't just describe what they do; judge how well they work against cost, lifespan, and downdrift side effects.
  • Rule 3 – Conclude with a Verdict: Top students end with a summarising judgment: "While hard engineering offers robust, immediate local protection, it is rarely sustainable long-term due to extreme maintenance costs and severe knock-on erosion further downdrift."

Topics

3.1 Living with the physical environment · 3.4 Geographical skills · 3.1.3 Section C: Physical landscapes in the UK · 3.4.2 Graphical skills · 3.4.4 Statistical skills

Question and mark scheme from the AQA GCSE Geography examination, Paper 1, June 2025. QuestionVault is an independent revision resource; questions remain the copyright of the awarding body.