Mastering A Level Geography Fieldwork

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Mastering A Level Geography Fieldwork

What do you already know about geography fieldwork methods?

Learning Objective

At the end of the lesson you will be able to describe, evaluate and improve key fieldwork methods used in A Level Geography.

Fieldwork: Why Is It Important?

Fieldwork helps you collect real-world data

Apply geographical theories

Develop analytical and evaluation skills needed for coursework and exams.

1. Infiltration Test

Measures the rate of water entering soil; essential for studying flood risk, surface runoff, and drainage.

Infiltration Test: Procedure

Strengths: Reliable, quantitative, repeatable. Limitations: Soil saturation, roots/stones interfere, prior weather affects results.

1. Insert infiltration ring 5 cm into soil. 2. Pour measured water in. 3. Start stopwatch. 4. Record time taken for infiltration. 5. Repeat three times and calculate a mean.

Strengths & Limitations

Steps

2. Pavement Width, Height and Depth

Measures limestone pavement and grikes, investigating weathering and landscape variations.

Pavement Measurement: Procedure

How to Measure

Strengths & Limitations

Strengths: Simple, good for weathering. Limitations: Irregular shapes, safety risks, subjective measurements.

Width: Edge to edge across path. Height: From surface to ground. Depth: From surface to base of pavement.

Repeat at several points across transect.

3. Slope Measurement

Uses ranging poles and a clinometer to measure slope angle for valleys and hillslopes.

Slope Measurement: Procedure

Strengths: Quick, quantitative, accurate. Limitations: Human error, ground irregularities, teamwork required.

Strengths & Limitations

1. Set poles at set distance of 10m.

2. Use clinometer at eye level.

3. Align with same height on second pole.

4. Record angle.

5. Repeat and calculate mean.

How to Measure

4. Vegetation Cover Using Quadrats

Assesses percentage cover and biodiversity, used to study succession and human impacts.

Quadrat Sampling: Steps & Evaluation

Strengths: Quick, good data, repeatable. Limitations: Subjective estimates, bias in placement, seasonal change.

1. Place quadrat (randomly/systematically). 2. Estimate % vegetation cover. 3. Record dominant species. 4. Repeat at many sites.

Steps

Strengths & Limitations

5. Measuring Rock Size with Callipers

Measures clast size in rivers and glacial deposits to analyse transport, weathering and energy.

Rock Size Measurement: Guide

Steps

1. Select rocks randomly. 2. Measure longest axis with callipers. 3. Record in mm. 4. Repeat for a large sample.

Strengths & Limitations

Strengths: Precise, statistical analysis. Limitations: Large rocks tricky, bias, time-consuming.

Evaluation: Reliability, Accuracy, Validity

Was equipment calibrated? Was the right method chosen? Did it measure what was intended?

Were measurements repeated? Was a mean calculated? Were methods standardised?

Accuracy & Validity

Reliability

Sampling & Error in Fieldwork

Instrument reading errors, judgement, soil moisture, weather, and season all impact results.

Random, systematic, and stratified sampling methods must be considered for robust data.

Sampling Methods

Human & Environmental Error

Safety in the Field

Take care on uneven surfaces, deep grikes, and steep slopes. Use correct footwear and work with supervision.

Exam Tip: AO3 Evaluation

Use structured sentences:

'This method is reliable because…'

'However, results may be less valid because…'

'Reliability could be improved by…'

Reflection

Think about which fieldwork method you find most reliable or challenging, and why. Share with a partner.

Write down 3 things you learned in this lesson.

Write down 2 things you want to know more about.

Ask 1 question about something you haven't quite understood yet.