Formulating enquiry questions

The Geographical Enquiry Cycle

For Edexcel B, river fieldwork follows a structured enquiry cycle (also known as the "Route to Enquiry").
Stage 1: Planning and Preparation – This is the most critical stage for this subtopic. It involves formulating the enquiry question and hypothesis, and selecting a suitable location.
Stage 2: Data Collection – Gathering primary and secondary data.
Stage 3: Data Presentation – Visualising findings through graphs or maps.
Stage 4: Data Analysis – Describing trends and explaining them using geographical theory.
Stage 5: Conclusions – Summarising findings in relation to the original question.
Stage 6: Evaluation – Reflecting on the investigation's successes and limitations.

What Makes a River Enquiry Question Investigatable?

A successful investigation begins with a question that is testable, rather than one based on opinion (e.g., "Is the river pretty?").
In Edexcel Specification B, river fieldwork must specifically investigate how drainage basin and channel characteristics influence flood risk for people and property.
To be investigatable, an enquiry question must:
- Rely on measurable data: Focus on river variables that can be quantified (e.g., channel width, water velocity, or discharge).
- Incorporate qualitative data: Edexcel B requires at least one qualitative method, such as annotated field sketches of human-made defenses or land-use mapping.
- Be specific to a location: It must be tied to a particular stretch of a river.
- Be achievable: The data must be collectable within a single day at a reach scale.

The Bradshaw Model and Hypothesis Generation

Most river investigations are based on the Bradshaw Model, a theoretical model that predicts how a "typical" river's channel morphology (the physical shape and size) and other characteristics change from source to mouth.
Downstream, variables like discharge, occupied channel width, channel depth, and average velocity are expected to increase.
Variables like load particle size, channel bed roughness, and gradient are expected to decrease downstream.
When planning, you must write a hypothesis—a clear, testable, and directional statement about the relationship between variables.
A strong hypothesis uses directional words: "River discharge increases with distance from the source" or "Bedload size decreases downstream."

Selecting a Suitable Location (Reach Scale)

Fieldwork data collection must take place at a reach scale, which is a manageable segment of the river (typically $10$ to $100$ metres long) exhibiting fairly uniform characteristics.
Choosing a location depends on feasibility:
- Accessibility: Can you safely reach the river via public footpaths?
- Safety: You must assess bank stability and water depth. A major risk is Weil’s Disease (a bacterial infection from animal urine); this makes sites near heavy livestock or stagnant water less feasible.
- Channel Size: The river must be small enough to measure using handheld equipment like a $25\,m$ tape measure or a $1\,m$ rule.

Formulating Specific Enquiry Questions

When you are asked to "suggest" an enquiry question in an exam, you must include a specific geographical variable, a directional change, and the exact location (using location-specific factors from the provided map or text).
Examples of Investigatable Questions for Edexcel B:
- "How does the discharge of the River Dove increase with distance from the source?"
- "To what extent does urban land use along Debden Brook increase the peak discharge and flood risk for local residents?"
- "How do the channel characteristics of the River Tillingbourne change downstream and affect its flood capacity?"
Linking to Flood Risk: Questions should reflect the bankfull capacity of the river—the point where the channel is full and any further increase in discharge leads to flooding. Investigating how urban surfaces (impermeable) vs. rural surfaces (permeable) change this capacity is a core focus of the Edexcel B specification.

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Exam Tips

Common Mistake
Students often write vague enquiry questions like 'How does the river change?' — for Edexcel B, your question MUST include a specific physical variable (e.g., discharge), a directional change (e.g., increases), and the exact location.
2
When asked to 'Suggest' an enquiry question based on an OS map, use specific map evidence such as a grid reference or a named confluence to secure high AO4 (skills) marks.
3
In exams, always justify your reach selection by mentioning feasibility, such as 'Site 1 was selected because the water was shallow enough to safely enter and use a 1-metre rule.'

Key Terms(17)

enquiry cycle: The sequence of stages in a geographical investigation, from planning and data collection to analysis, conclusions, and evaluation.
enquiry question: A specific, localized, and open-ended question that guides a geographical investigation.
flood risk: The likelihood and potential impact of a river overflowing its banks, affecting people and property.
measurable data: Information that can be recorded as numbers (quantitative), allowing for objective comparison and statistical analysis.
river variables: Quantifiable physical characteristics of a river, such as its width, depth, velocity, and discharge.
annotated field sketches: Qualitative diagrams of a fieldwork site that include labels to explain specific features like flood defenses or land use.
Bradshaw Model: A theoretical model describing how river characteristics, such as width and velocity, change from source to mouth.
discharge: The volume of water flowing through a river channel at a given point, usually measured in $m^3/s$ .
occupied channel width: The width of the channel that is actually filled with water at the time of the investigation.
hypothesis: A clear, testable, and directional statement about the expected relationship between variables.
reach scale: A segment of a river exhibiting fairly uniform hydrological characteristics, typically 10 to 100 metres long, where fieldwork is conducted.
feasibility: The extent to which fieldwork can be practically and safely carried out given constraints like time, location access, and available equipment.
accessibility: The ease and safety of reaching a fieldwork site, usually via public footpaths or rights of way.
Weil's Disease: A bacterial infection spread by animal urine in water, presenting a major safety risk during river fieldwork.
location-specific factors: Unique geographical features of a study area (e.g., a named confluence or town) that must be included in an enquiry question.
channel morphology: The physical size and shape of the river channel, including its width, depth, and the nature of its bedload.
bankfull: The maximum capacity of a river channel before it overflows onto the floodplain, directly linked to flood risk.

Previous Topic: Coastal FieldworkSecondary data sources Next Subtopic: Selecting fieldwork methodsSelecting fieldwork methods

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Key Terms(17)

enquiry cycle: The sequence of stages in a geographical investigation, from planning and data collection to analysis, conclusions, and evaluation.
enquiry question: A specific, localized, and open-ended question that guides a geographical investigation.
flood risk: The likelihood and potential impact of a river overflowing its banks, affecting people and property.
measurable data: Information that can be recorded as numbers (quantitative), allowing for objective comparison and statistical analysis.
river variables: Quantifiable physical characteristics of a river, such as its width, depth, velocity, and discharge.
annotated field sketches: Qualitative diagrams of a fieldwork site that include labels to explain specific features like flood defenses or land use.
Bradshaw Model: A theoretical model describing how river characteristics, such as width and velocity, change from source to mouth.
discharge: The volume of water flowing through a river channel at a given point, usually measured in $m^3/s$ .
occupied channel width: The width of the channel that is actually filled with water at the time of the investigation.
hypothesis: A clear, testable, and directional statement about the expected relationship between variables.
reach scale: A segment of a river exhibiting fairly uniform hydrological characteristics, typically 10 to 100 metres long, where fieldwork is conducted.
feasibility: The extent to which fieldwork can be practically and safely carried out given constraints like time, location access, and available equipment.
accessibility: The ease and safety of reaching a fieldwork site, usually via public footpaths or rights of way.
Weil's Disease: A bacterial infection spread by animal urine in water, presenting a major safety risk during river fieldwork.
location-specific factors: Unique geographical features of a study area (e.g., a named confluence or town) that must be included in an enquiry question.
channel morphology: The physical size and shape of the river channel, including its width, depth, and the nature of its bedload.
bankfull: The maximum capacity of a river channel before it overflows onto the floodplain, directly linked to flood risk.

Formulating enquiry questions

The Geographical Enquiry Cycle

For Edexcel B, river fieldwork follows a structured enquiry cycle (also known as the "Route to Enquiry").
Stage 1: Planning and Preparation – This is the most critical stage for this subtopic. It involves formulating the enquiry question and hypothesis, and selecting a suitable location.
Stage 2: Data Collection – Gathering primary and secondary data.
Stage 3: Data Presentation – Visualising findings through graphs or maps.
Stage 4: Data Analysis – Describing trends and explaining them using geographical theory.
Stage 5: Conclusions – Summarising findings in relation to the original question.
Stage 6: Evaluation – Reflecting on the investigation's successes and limitations.

What Makes a River Enquiry Question Investigatable?

A successful investigation begins with a question that is testable, rather than one based on opinion (e.g., "Is the river pretty?").
In Edexcel Specification B, river fieldwork must specifically investigate how drainage basin and channel characteristics influence flood risk for people and property.
To be investigatable, an enquiry question must:
- Rely on measurable data: Focus on river variables that can be quantified (e.g., channel width, water velocity, or discharge).
- Incorporate qualitative data: Edexcel B requires at least one qualitative method, such as annotated field sketches of human-made defenses or land-use mapping.
- Be specific to a location: It must be tied to a particular stretch of a river.
- Be achievable: The data must be collectable within a single day at a reach scale.

The Bradshaw Model and Hypothesis Generation

Most river investigations are based on the Bradshaw Model, a theoretical model that predicts how a "typical" river's channel morphology (the physical shape and size) and other characteristics change from source to mouth.
Downstream, variables like discharge, occupied channel width, channel depth, and average velocity are expected to increase.
Variables like load particle size, channel bed roughness, and gradient are expected to decrease downstream.
When planning, you must write a hypothesis—a clear, testable, and directional statement about the relationship between variables.
A strong hypothesis uses directional words: "River discharge increases with distance from the source" or "Bedload size decreases downstream."

Selecting a Suitable Location (Reach Scale)

Fieldwork data collection must take place at a reach scale, which is a manageable segment of the river (typically $10$ to $100$ metres long) exhibiting fairly uniform characteristics.
Choosing a location depends on feasibility:
- Accessibility: Can you safely reach the river via public footpaths?
- Safety: You must assess bank stability and water depth. A major risk is Weil’s Disease (a bacterial infection from animal urine); this makes sites near heavy livestock or stagnant water less feasible.
- Channel Size: The river must be small enough to measure using handheld equipment like a $25\,m$ tape measure or a $1\,m$ rule.

Formulating Specific Enquiry Questions

When you are asked to "suggest" an enquiry question in an exam, you must include a specific geographical variable, a directional change, and the exact location (using location-specific factors from the provided map or text).
Examples of Investigatable Questions for Edexcel B:
- "How does the discharge of the River Dove increase with distance from the source?"
- "To what extent does urban land use along Debden Brook increase the peak discharge and flood risk for local residents?"
- "How do the channel characteristics of the River Tillingbourne change downstream and affect its flood capacity?"
Linking to Flood Risk: Questions should reflect the bankfull capacity of the river—the point where the channel is full and any further increase in discharge leads to flooding. Investigating how urban surfaces (impermeable) vs. rural surfaces (permeable) change this capacity is a core focus of the Edexcel B specification.

Sign up to continue reading

Get full access to revision notes, key terms, and exam tips for every subtopic.

Exam Tips

Common Mistake
Students often write vague enquiry questions like 'How does the river change?' — for Edexcel B, your question MUST include a specific physical variable (e.g., discharge), a directional change (e.g., increases), and the exact location.
2
When asked to 'Suggest' an enquiry question based on an OS map, use specific map evidence such as a grid reference or a named confluence to secure high AO4 (skills) marks.
3
In exams, always justify your reach selection by mentioning feasibility, such as 'Site 1 was selected because the water was shallow enough to safely enter and use a 1-metre rule.'

Key Terms(17)

enquiry cycle: The sequence of stages in a geographical investigation, from planning and data collection to analysis, conclusions, and evaluation.
enquiry question: A specific, localized, and open-ended question that guides a geographical investigation.
flood risk: The likelihood and potential impact of a river overflowing its banks, affecting people and property.
measurable data: Information that can be recorded as numbers (quantitative), allowing for objective comparison and statistical analysis.
river variables: Quantifiable physical characteristics of a river, such as its width, depth, velocity, and discharge.
annotated field sketches: Qualitative diagrams of a fieldwork site that include labels to explain specific features like flood defenses or land use.
Bradshaw Model: A theoretical model describing how river characteristics, such as width and velocity, change from source to mouth.
discharge: The volume of water flowing through a river channel at a given point, usually measured in $m^3/s$ .
occupied channel width: The width of the channel that is actually filled with water at the time of the investigation.
hypothesis: A clear, testable, and directional statement about the expected relationship between variables.
reach scale: A segment of a river exhibiting fairly uniform hydrological characteristics, typically 10 to 100 metres long, where fieldwork is conducted.
feasibility: The extent to which fieldwork can be practically and safely carried out given constraints like time, location access, and available equipment.
accessibility: The ease and safety of reaching a fieldwork site, usually via public footpaths or rights of way.
Weil's Disease: A bacterial infection spread by animal urine in water, presenting a major safety risk during river fieldwork.
location-specific factors: Unique geographical features of a study area (e.g., a named confluence or town) that must be included in an enquiry question.
channel morphology: The physical size and shape of the river channel, including its width, depth, and the nature of its bedload.
bankfull: The maximum capacity of a river channel before it overflows onto the floodplain, directly linked to flood risk.

Previous Topic: Coastal FieldworkSecondary data sources Next Subtopic: Selecting fieldwork methodsSelecting fieldwork methods

Back to Formulating enquiry questions

Put your knowledge into practice — try past paper questions for Geography B

Key Terms(17)

enquiry cycle: The sequence of stages in a geographical investigation, from planning and data collection to analysis, conclusions, and evaluation.
enquiry question: A specific, localized, and open-ended question that guides a geographical investigation.
flood risk: The likelihood and potential impact of a river overflowing its banks, affecting people and property.
measurable data: Information that can be recorded as numbers (quantitative), allowing for objective comparison and statistical analysis.
river variables: Quantifiable physical characteristics of a river, such as its width, depth, velocity, and discharge.
annotated field sketches: Qualitative diagrams of a fieldwork site that include labels to explain specific features like flood defenses or land use.
Bradshaw Model: A theoretical model describing how river characteristics, such as width and velocity, change from source to mouth.
discharge: The volume of water flowing through a river channel at a given point, usually measured in $m^3/s$ .
occupied channel width: The width of the channel that is actually filled with water at the time of the investigation.
hypothesis: A clear, testable, and directional statement about the expected relationship between variables.
reach scale: A segment of a river exhibiting fairly uniform hydrological characteristics, typically 10 to 100 metres long, where fieldwork is conducted.
feasibility: The extent to which fieldwork can be practically and safely carried out given constraints like time, location access, and available equipment.
accessibility: The ease and safety of reaching a fieldwork site, usually via public footpaths or rights of way.
Weil's Disease: A bacterial infection spread by animal urine in water, presenting a major safety risk during river fieldwork.
location-specific factors: Unique geographical features of a study area (e.g., a named confluence or town) that must be included in an enquiry question.
channel morphology: The physical size and shape of the river channel, including its width, depth, and the nature of its bedload.
bankfull: The maximum capacity of a river channel before it overflows onto the floodplain, directly linked to flood risk.