Key term
OCR GCSE Geography A J383
Ecosystems of the Planet
Topic overviewAbiotic and biotic components, and how ecosystems interactThe world’s biomes: where they are and what they are likeWhere the tropical rainforests are, and what they are likeWhere the coral reefs are, and what they are likeRainforest processes and nutrient cyclingTwo threatened ecosystems: a rainforest and a coral reef
Environmental Threats to Our Planet
Topic overviewClimate change through the Quaternary, and since 1000ADThe evidence for climate changeNatural causes of climate change, and the enhanced greenhouse effectThe consequences of climate changeThe world’s climatic regions and global atmospheric circulationHow global circulation produces extreme weatherTropical storms: causes, distribution and frequencyA drought caused by El Niño or La Niña
Fieldwork Skills
Geographical Skills
Topic overviewConstructing maps, and reading cross-sections and transectsCoordinates, scale, distance and reading information from a mapGradient, contours, spot heights and GISChoosing, constructing and presenting graphs and chartsReading and interpreting the main graph and chart typesNumber, area, scale and the relationships between unitsProportion and ratio, and measures of central tendency and spreadPercentages and percentiles, and designing data collection sheetsReading tables, and describing relationships in bivariate dataTrend lines and lines of best fitPredicting from data, and spotting weak statistical presentationDrawing and justifying conclusions from dataInterpreting images and written sources, and recognising biasJudging the limits of maps, graphs, statistics and images
Landscapes of the UK
People of the Planet
Topic overviewDefining and measuring developmentThe global pattern of development: ACs, EDCs and LIDCsWhy development is uneven, and the role of aidA developing or emerging country: its context and economyRostow’s model and the country’s path of developmentCities, megacities and world citiesWhy urban growth rates differ around the worldRapid urbanisation in poorer countries: causes and effectsA major city in a poorer or emerging country
People of the UK
Topic overviewThe UK’s trade, media and cultural links with the worldThe UK’s geographical diversity and its inequalitiesUneven development within the UK, and the effects of economic growthHow the UK’s population structure has changed since 1900Immigration into the UK in the twenty-first centuryUrban trends in the UK and their effectsA major UK city: its people, challenges and ways of life
UK Environmental Challenges
Topic overviewAir masses, the North Atlantic Drift and the UK’s extreme weatherA UK flood event: causes, effects and responsesHow people use, modify and change UK ecosystemsThe UK’s renewable and non-renewable energy sourcesChanging UK energy supply and demand, and sustainable useRenewables in the UK, and the future of fossil fuelsWhat shapes the UK’s energy choices
Geographical Skills
Choosing, constructing and presenting graphs and charts
- 3 things to know
- Component 03
Overview
Which graph suits change over time, parts of a whole, separate categories, relationships and grouped continuous data, which axis takes the independent variable, and the title, labels, scale, annotation and colour a graph needs.
What you need to know
Answer each one before you reveal it.
Your recallNot started
Key term
Which chart suits data that makes up parts of a single whole?
Key term
Which graph would you choose to compare one quantity across separate places or categories?
Questions from this subtopic
Each one with the model answer underneath.
- 1
Which type of graph best shows how a value changes continuously over time?
Model answer
A line graph, because the line shows the trend between one reading and the next.
- 2
Which chart suits data that makes up parts of a single whole?
Model answer
A pie chart, because each segment shows the share one category takes of the total.
- 3
Which graph would you choose to compare one quantity across separate places or categories?
Model answer
A bar graph, since the bars stand apart and their heights can be compared directly.
- 4
Which graph is used to look for a relationship between two sets of figures?
Model answer
A scatter graph, with one of the two variables on each axis.
- 5
Which graph suits continuous data grouped into equal classes, such as pebble sizes?
Model answer
A histogram, whose bars touch because the classes run on from one another without gaps.
- 6
On a scatter graph, which variable belongs on the horizontal axis?
Model answer
The independent variable, the one chosen or controlled, with the variable it affects on the vertical axis.
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