Key term
Edexcel GCSE Geography A 1GA0
Changing Cities
Topic overviewGlobal urbanisation trends and ratesThe UK’s urban population and why urbanisation varies by regionThe chosen UK city: site, situation, connectivity and structureUrbanisation, suburbanisation and migration in the chosen UK cityPopulation change and deindustrialisation in the chosen UK cityInequality and changes in retailing in the chosen UK cityMaking the chosen UK city more sustainableThe chosen developing or emerging city: site, situation and structurePopulation growth and migration in the chosen developing or emerging cityInequality and quality of life in the chosen developing or emerging cityRapid urbanisation: challenges, and bottom-up and top-down responsesGovernment policy and quality of life in the chosen city
Coastal Landscapes and ProcessesLandscape option
Ecosystems, Biodiversity and Management
Topic overviewThe world’s large-scale ecosystems and what controls their distributionThe biosphere as a resource, and its commercial exploitationUK terrestrial and marine ecosystemsTropical rainforest characteristics and the nutrient cycleRainforest biodiversity and plant and animal adaptationsRainforest goods and services, and the causes of deforestationSustainable management of a named rainforestDeciduous woodland characteristics and the nutrient cycleWoodland biodiversity and plant and animal adaptationsWoodland goods and services, and the causes of deforestationSustainable management of a named deciduous woodland
Energy Resource ManagementResource option
Geographical Investigations – Fieldwork
Topic overviewRiver fieldwork: enquiry questions, methods and secondary dataCoastal fieldwork: enquiry questions, methods and secondary dataUrban fieldwork: enquiry questions and methodsUrban fieldwork: secondary data sourcesRural fieldwork: enquiry questions and methodsRural fieldwork: secondary data sourcesThe enquiry process: asking questions and choosing methodsThe enquiry process: presenting, analysing and concludingThe enquiry process: evaluating fieldwork
Geographical Investigations − UK Challenges
Geographical Skills
Topic overviewAtlas and map skills: distributions, patterns and sketch mapsDescribing the site, situation and shape of settlementsInterpreting diagrams, sketches and photographsUsing online census sourcesHypotheses, sampling and risk assessmentCollecting, recording and presenting dataWriting about findings and building an argument
Glaciated Upland Landscapes and ProcessesLandscape option
Topic overviewGlacial processes and the processes at work on relict landscapes todayPast climate and present UK weather in glaciated uplandsGlacial landforms of erosion and depositionCrag and tail, and drumlinsHuman activity and development in glaciated uplandsA named distinctive glaciated upland landscape in the UK
Global Development
Topic overviewDefining and measuring developmentThe global pattern of development and why it is unevenThe consequences of uneven development for quality of lifeStrategies to reduce uneven development: aid, top-down and bottom-upThe chosen country: location, context and internal unevennessEconomic change, trade, aid and investment in the chosen countryPopulation and social change in the chosen countryGeopolitics and technology in the chosen countryThe impacts of rapid development and how they are managed
Mathematics and Statistics Skills
Topic overviewCartographic skills: contours, transects, scale and distanceUsing GIS and geo-spatial dataChoosing, constructing and interpreting graphs and chartsNumerical skills: number, scale, proportion and ratioDrawing conclusions from numerical dataStatistical skills: averages, spread, percentages and correlationSpotting weaknesses in how data is presented
Resource Management
River Landscapes and ProcessesLandscape option
The Changing Landscapes of the UK
Water Resource ManagementResource option
Topic overviewThe global distribution of fresh water, and water surplus and deficitChanging water supply and demandHow water use differs between countriesWater supply problems in the UK and in developing countriesStakeholder attitudes to water, and desalinationSustainable management of water resources
Weather Hazards and Climate Change
Topic overviewGlobal atmospheric circulation and the transfer of heatNatural climate change and the evidence for itThe enhanced greenhouse effect and the effects of climate changeThe climate of the UK and how it variesHow tropical cyclones form, and where they occurWhy tropical cyclones are hazardous, and their impactsResponses to tropical cyclonesThe causes of drought and why some places are more vulnerableThe impacts of drought and responses to it
Geographical Investigations – Fieldwork
River fieldwork: enquiry questions, methods and secondary data
- 3 things to know
- Paper 3
Overview
Discharge and how it is calculated from cross-sectional area and velocity, measuring width, depth and velocity with floats and flow meters, quantitative and qualitative methods, change downstream, drainage basins, and flood risk maps and other published data for river fieldwork.
What you need to know
Answer each one before you reveal it.
Your recallNot started
Key term
Which two measurements are combined to work out discharge in the field?
Key term
How is discharge worked out once both measurements have been taken?
Questions from this subtopic
Each one with the model answer underneath.
- 1
What is meant by the discharge of a river?
Model answer
It is the volume of water flowing past a point in the channel each second, given in cubic metres per second (m³ s⁻¹).
- 2
Which two measurements are combined to work out discharge in the field?
Model answer
The cross-sectional area of the channel and the mean velocity of the water flowing through it.
- 3
How is discharge worked out once both measurements have been taken?
Model answer
Multiply the cross-sectional area in m² by the mean velocity in m s⁻¹.
- 4
A channel is 3 m wide with a mean depth of 0.4 m and the water moves at a mean of 0.5 m s⁻¹. What is its discharge?
Model answer
The cross-sectional area is 1.2 m², so the discharge is 0.6 m³ s⁻¹.
- 5
How is the cross-sectional area of a channel measured?
Model answer
Stretch a tape across the water to get the width, measure the depth at regular intervals along it, then multiply the width by the mean depth.
- 6
How is velocity measured using a float?
Model answer
Time a floating object as it travels a measured length of channel, divide the distance by the time, and repeat to take a mean.
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