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
Reading tables, and describing relationships in bivariate data
- 3 things to know
- Component 03
Overview
Reading a table's title, headings and units, anomalies, finding the biggest change, why raw totals mislead, tables against graphs, bivariate data, positive, negative, strong and weak relationships, why a relationship does not prove cause, and what a good description of one includes.
What you need to know
Answer each one before you reveal it.
Your recallNot started
Key term
What is an anomaly in a set of figures?
Key term
How do you find the biggest change in a table rather than simply the biggest number?
Questions from this subtopic
Each one with the model answer underneath.
- 1
What should you check first when reading a table of figures?
Model answer
The title, the column headings and the units, so that you know what each number actually measures.
- 2
What is an anomaly in a set of figures?
Model answer
A value that does not fit the pattern shown by the rest of the data.
- 3
How do you find the biggest change in a table rather than simply the biggest number?
Model answer
Work out the difference between the two years or places for every row, instead of comparing the totals.
- 4
Why can raw totals mislead when comparing places of very different sizes?
Model answer
A larger place has larger totals whatever the pattern, so figures need converting into rates or percentages before they can be compared.
- 5
What advantage does a table have over a graph?
Model answer
It gives the exact figures, which can only be read approximately off a graph.
- 6
What is bivariate data?
Model answer
Data in which two different variables are recorded for each place or item, so that the two can be compared.
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