Numbers
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
Mathematics and Statistics Skills
Numerical skills: number, scale, proportion and ratio
- 3 things to know
- All three papers
Overview
Units of length and area, map scale, checking units, data collection sheets, accuracy and reliability, sample size, systematic and random choice of sites, control groups, flood return periods, magnitude against frequency, and logarithmic scales.
What you need to know
Answer each one before you reveal it.
Your recallNot started
Key term
A rectangular field measures 20 m by 15 m. What is its area?
Key term
What does a scale of 1:25 000 mean, and what does one centimetre represent on such a map?
Questions from this subtopic
Each one with the model answer underneath.
- 1
How many metres are there in a kilometre, and how many square metres in a hectare?
Model answer
A thousand metres make a kilometre, and a hectare is 10 000 m², since it is a square of 100 m by 100 m.
- 2
A rectangular field measures 20 m by 15 m. What is its area?
Model answer
300 m², found by multiplying the length by the width.
- 3
What does a scale of 1:25 000 mean, and what does one centimetre represent on such a map?
Model answer
One unit on the paper stands for 25 000 of the same units on the ground, so a centimetre represents 250 m.
- 4
Why must the units be checked before two measurements are compared?
Model answer
Because a figure in metres and one in kilometres are a thousand times apart, so comparing them as they stand gives an answer wrong by that factor.
- 5
What is a data collection sheet?
Model answer
A recording form prepared in advance with a space for every measurement, so each reading is written down in the same way each time.
- 6
What does accuracy mean when taking a measurement outdoors?
Model answer
How close the reading is to the true value, which depends on choosing a suitable instrument and reading it properly.
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