AQA GCSE Geography Paper 1, June 2025: Question 4
15 marks · Medium difficulty · Extended Response
Answer questions on river processes, hydrograph analysis, waterfall formation, and the costs and benefits of soft engineering flood management strategies.
Practise this questionQuestion
Question text
04.1 Which term is used to describe the transportation process where pebbles are
bounced along a river bed?
Shade one circle only.
[1 mark]
A Saltation
B Solution
C Suspension
D Traction
Figure 14 is a flood hydrograph for two different rivers after the same storm.
04.2 Complete the hydrograph for River B on Figure 14 using the following data.
[1 mark]
Time 20:00
Discharge 20 cumecs
Figure 14
120 120
Peak discharge
100 100
80 80
Peak discharge
60 60
Peak rainfall
40 40
20 20
Time
Key
Rainfall (mm) Discharge for River A (urban) Discharge for River B (woodland)
04.3 What is the time difference between peak rainfall and peak discharge for River A?
Shade one circle only.
[1 mark]
(26)
A 1 hour
B 2 hours
C 3 hours
D 4 hours
04.4 Using Figure 14, describe two differences in the river discharge between River A
and River B.
[2 marks]
1 …
2 …
04.5 Explain how a waterfall is formed.
Use one or more labelled diagrams.
[4 marks]
(27) …
Study Figure 15, photographs of soft engineering strategies used to manage
river flooding.
Figure 15
Tree planting Flood warning
04.6 Discuss the costs and benefits of using soft engineering to manage river flooding.
Use Figure 15 and your own understanding.
[6 marks]
(28)
Extra space …
End of Question 4
Question 5 Glacial landscapes in the UK
Mark scheme
Show the mark scheme
Total
Qu Pt Marking guidance
marks
04 1 Which term is used to describe the transportation process where pebbles 1
are bounced along a river bed?
A Saltation
No credit if two or more statements are shaded.
AO1 – 1 mark
04 2 Complete the hydrograph for River B on Figure 14 using the following 1
data.
Time 20:00 for River B should be accurately marked at 20 cumecs and the
student should join the points to complete the line as shown above.
AO4 – 1 mark
04 3 What is the time difference between peak rainfall and peak discharge for 1
River A?
B 2 hours
No credit if two or more statements are shaded.– – 8035/1 –
AO4 – 1 mark
04 4 Using Figure 14, describe two differences in the river discharge between 2
River A and River B.
2x1
The peak discharge for River A is higher/nearly twice as much (as that for
River B) (1)
The discharge for River A is higher (1)
River B has a higher discharge than River A from 19:30 (1).
The peak discharge occurs sooner after peak rainfall for River A (than for River
B) / there is a shorter lag time for River A (1).
The discharge for River A has a steeper rise and fall / rising and falling limb
(than that of River B) (1).
River A rises continuously to peak discharge after peak rainfall whereas River
B plateaus (at 16:00–16:30) before rising again (1).
The discharge for River B takes longer to change after the rainfall event (than
that for River A) (1).
The discharge for River B has not returned to its normal flow on the hydrograph
unlike that of River A (1).
No credit for explanation of the two hydrographs.
Must make some (implied) comparative reference.
Only 1 mark for two separate statements about the same trend.–– 8035/1 –
AO4 – 2 marks
04 5 Explain how a waterfall is formed. 4
Use one or more labelled diagrams.
Level Marks Description
2 3–4 AO1 – Demonstrates accurate knowledge about the
(Clear) formation of waterfall and river erosion processes.
AO2 – Shows a clear geographical understanding of
the effect(s) of river erosion on waterfall formation.
1 1–2 AO1 – Demonstrates basic knowledge about the
(Basic) formation of waterfall and river erosion processes.
AO2 – Shows a limited geographical understanding of
the effect(s) of river erosion on waterfall formation.
0 No relevant content.
• Level 2 (clear) responses are likely to contain linked statements showing
understanding of river erosion and the formation of waterfalls. Appropriate
geographical terminology.
• Level 1 (basic) responses will comprise simple ideas with limited or partial
sequence and little reference to the processes involved. Limited
geographical terminology.
• 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 the formation of a waterfall.
• The river may flow over an area of hard (cap) rock with softer more easily
eroded rock underneath. Over time the softer rock is worn away more
rapidly by processes of hydraulic action and abrasion, creating a waterfall.
The water hits the bottom of the falls with great force. This erodes a deep
hole called a plunge pool. The softer underlying rock is eroded and
weakened. The softer layer collapses into the plunge pool, undercutting the
hard cap rock. The cap rock cracks and then collapses.
• Gradually the waterfall retreats upstream, leaving behind a steep sided
gorge. Every time the overhanging cap rock breaks off, the gorge retreats
further and grows longer. There is turbulent fast flowing water in the gorge.
Note that gorge formation is not needed to achieve max marks.
• Allow other explanations such as knick points along the river caused by
changing sea levels. Waterfalls are also found where hanging valleys form
in glacial landscapes.
No credit for identification of processes unless related to waterfall formation
Labelled and annotated diagram(s) can substitute for written text, showing the
sequence of changes and processes involved. (See next page.)––8035/1 –
The diagram above would be awarded 4 marks.
AO1 – 2 marks – – 8035/1 –
AO2 – 2 marks
04 6 Discuss the costs and benefits of using soft engineering to manage river 6
flooding. Use Figure 15 and your own understanding.
Level Marks Description
3 5–6 AO2 – Shows thorough geographical understanding
(Detailed) of the costs and benefits of using soft engineering.
AO3 – Demonstrates thorough application of
knowledge and understanding in discussing the soft
engineering strategy/ies shown in Figure 15.
2 3–4 AO2 – Shows clear geographical understanding of
(Clear) the costs and/or benefits of using soft engineering.
AO3 – Demonstrates reasonable application of
knowledge and understanding in discussing the
strategy(ies) shown in Figure 15.
1 1–2 AO2 – Shows limited geographical understanding of
(Basic) the costs and/or benefits of using soft engineering.
AO3 – Demonstrates limited application of
knowledge and understanding in discussing the
strategy(ies) shown in Figure 15.
0 No relevant content
• Level 3 (detailed) responses will be developed responses with reference to
both the costs and benefits of soft engineering strategy/ies. Detailed use of
Figure 15 and own understanding. Appropriate terminology will be used.
• Level 2 (clear) responses will show some reference to costs and/or
benefits of soft engineering strategy(ies). Answers likely to make reference
to Figure 15 and/or own understanding. Some geographical terminology
evident.
• Level 1 (basic) responses will be simple statements. May consist of listed
38 points or random statements about soft engineering strategy(ies).
• Max L2 for answer that does not refer to Figure 15.
Indicative content
• The command is ‘discuss’, so responses should provide a reasoned account
of the costs and benefits of different types of soft engineering. At the highest
level there may be a discussion of the balance of costs and benefits
• Understanding of soft engineering. Soft engineering schemes are set up to
work with the natural processes along the river to reduce the effects of
flooding. They aim to slow down the movement of water into the river
channel and do not involve building artificial structures. Soft engineering
aims to work with the environment and is more ecologically sensitive.
• Figure 15 shows tree planting and flood warnings. Tree planting in a
drainage basin increases interception and storage and reduces surface run
off. This increases lag time and reduces a river’s discharge and so makes it
less likely to flood. It creates new habitats for animals and improves water
quality by filtering pollutants out of rainwater. Tree planting is relatively
cheap in the long-term but it can take years for the trees to mature and start––8035/1–
having an effect. Tree planting can also restrict other types of land use.
• Flood warnings help people to take action in advance of flooding.
Three levels of warning are used: flood watch, flood warning and severe 39
flood warning. The strategy is relatively cheap and can reduce loss of life
since people are given time to evacuate areas at risk. Flood warnings can
also reduce damage to belongings resulting in fewer insurance claims and
emotional distress. However, flood warnings do not actually prevent or
reduce the risk of the river flooding and not everyone may be alerted by
them or in time.
• Credit other soft engineering strategies. For example:
o Floodplain zoning is a strategy where proximity to river determines land
use. Land use close to river may be used for animal grazing. Land
furthest from the river used for ‘expensive’ land use, such as housing and
industry. The strategy is relatively cheap and does not interfere with
natural flows and river processes. Less damage is caused, leading to
fewer insurance claims. However, it is not always possible to change
existing land uses and planning decisions may not always be popular.
o River restoration involves restoring a river that has undergone hard
engineering back to its original course. If the land is no longer valuable,
river restoration can help reduce the risk of flooding downstream by using
the natural processes of the river. This can be an expensive strategy.
AO2 – 3 marks
AO3 – 3 marks
How to answer it
River Landscapes & Flood Management (AQA GCSE)
This question assesses your core knowledge and analytical skills on River Landscapes in the UK:
- Fluvial Transportation Processes: Recognising saltation, traction, suspension, and solution.
- Graphical & Numerical Skills: Plotting hydrograph points accurately and calculating lag time (peak rainfall to peak discharge).
- Data Interpretation: Directly comparing hydrograph characteristics (peak discharge, lag time, limb steepness) between urban and forested catchments.
- Landform Explanations: Providing a step-by-step erosional sequence for waterfall and gorge formation, fully supported with labelled diagrams.
- Resource Evaluation (Discuss 6-marker): Balanced appraisal of the economic, social, and environmental costs and benefits of soft engineering strategies (afforestation, flood warnings, floodplain zoning).
Fluvial Bedload Transportation
Identify the term for pebbles bouncing along the river bed
✅ Correct Answer
A: Saltation
Award 1 mark for shading option A only. No credit if two or more options are shaded.
💡 Four Transportation Types
- Traction: Large boulders rolled along the river bed.
- Saltation: Small pebbles bounced along the river bed.
- Suspension: Fine light silt and clay carried within the water flow.
- Solution: Minerals dissolved into the water (invisible load).
Completing a Flood Hydrograph
Plotting River B's final discharge point
✅ Correct Plotting
- Locate 20:00 on the horizontal (Time) axis.
- Plot a point exactly at 20 cumecs on the right-hand vertical axis.
- Use a ruler to join this point with a continuous line from the previous plotted value at 19:30 to complete the falling limb.
❌ Common Errors
- Wrong vertical axis: Reading from the left axis (rainfall in mm) instead of the right axis (discharge in cumecs).
- Incomplete line: Plotting the point but forgetting to join it with the preceding line.
- Dashed line error: Drawing a dashed line (River A style) instead of a solid line (River B style).
Calculating Hydrograph Lag Time
Time difference between peak rainfall and peak discharge for River A
📐 Step-by-Step Calculation
- Find Peak Rainfall: Look at the rainfall bar chart. Highest bar is at 15:30 (30 mm).
- Find Peak Discharge (River A): Look at the dashed line. Highest peak reaches 100 cumecs at 17:30.
- Calculate the difference:
17:30 - 15:30 = 2 hours
✅ Correct Answer
B: 2 hours
Lag time is specifically the interval between maximum rainfall intensity and maximum river discharge.
Comparative Discharge Analysis
Describe two differences in the river discharge between River A and River B
✅ Acceptable Comparative Points (Any 2)
- Peak Discharge: River A has a much higher peak discharge (~100 cumecs) than River B (~55 cumecs) / nearly double.
- Timing of Peak: River A reaches peak discharge earlier (17:30) than River B (18:30) / River A has a shorter lag time.
- Limb Steepness: River A has a steeper rising/falling limb than River B.
- Post-19:30 Discharge: River B has a higher discharge than River A after 19:30.
- Baseflow Return: River A returns closer to its starting baseflow, whereas River B remains elevated.
🧠 Exam Technique: Direct Comparisons
- Use comparative connectives like "whereas", "higher than", or "sooner than".
- Do NOT explain reasons: This question says describe. Explaining impermeable tarmac or tree interception gets 0 marks.
- Do not write two sentences that simply describe the same point twice (e.g. saying River A is higher, and then saying River B is lower).
Landform Formation: Waterfalls
Explain how a waterfall is formed (Level 2: 3–4 marks)
To score the top mark band (Level 2), you must draw and label a diagram. Your diagram must show:
- Layering: Resistant hard rock (cap rock) overlying less resistant soft rock.
- Erosion: Undercutting of soft rock via hydraulic action and abrasion.
- Features: Plunge pool at the base with swirling boulders; unsupported rock overhang.
- Evolution: Overhang collapsing under gravity; gorge of recession left as the waterfall retreats upstream.
💡 Sequential Model Answer
- A river flows over alternating horizontal bands of resistant hard rock (e.g. whinstone) overlying weaker soft rock (e.g. sandstone/shale).
- The soft rock erodes faster via hydraulic action (water force compressing air into cracks) and abrasion (rocks scouring the bed).
- A step forms. Water plunges over the ledge, carving out a deep plunge pool at the base.
- Undercutting leaves an unsupported overhang of hard rock, which eventually collapses under gravity into the plunge pool.
- This sequence repeats over time, causing the waterfall to retreat upstream and leaving a steep-sided gorge.
🧠 Examiner Insight
Common Pitfalls:
- Just naming erosion types without explaining where and how they act.
- Forgetting to explain that the waterfall retreats upstream to leave a gorge.
Discussing Soft Engineering
Discuss the costs and benefits of using soft engineering to manage river flooding
💡 Strategy 1: Tree Planting (Afforestation)
- Benefits: Intercepts precipitation, increases root uptake and evapotranspiration; reduces surface runoff and prolongs lag time; creates wildlife habitats; extracts carbon from the atmosphere.
- Costs/Limitations: Takes many years for saplings to grow dense enough to become fully effective; restricts agricultural and building land use; cannot stop extreme, long-duration rainfall events.
💡 Strategy 2: Flood Warnings & Preparation
- Benefits: Low-cost; gives communities and emergency services advance warning to deploy sandbags, move valuables upstairs, and safely evacuate, reducing injury and loss of life.
- Costs/Limitations: Does not physically stop water from flooding homes and businesses; relies on everyone receiving and understanding alerts; false alarms can cause complacency.
🧠 Level 3 Mark Scheme Breakdown (5–6 Marks)
- Both Costs and Benefits: Must cover positive impacts alongside weaknesses, financial costs, or trade-offs.
- Use of Figure 15: Must directly refer to the visual resources provided (afforestation on slopes / automated road hazard signs).
- Own Knowledge: Adding additional strategies like floodplain zoning or river restoration elevates your answer into Level 3.
- Balanced Evaluation: Soft engineering is ecologically sound and cheaper than hard engineering (e.g. dams/embankments), but does not physically hold back peak flood discharges.
❌ Common Misconceptions
- Ignoring the figure: Omitting direct reference to Figure 15 automatically caps the answer at Level 2 (maximum 4 marks).
- Confusing hard vs soft: Discussing concrete sea walls, dams, or artificial levees. These are hard engineering methods!
- One-sided answers: Writing only positive benefits without discussing costs or limitations will prevent you reaching Level 3.
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 · 3.4.3 Numerical 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.