CSEC Geography cheat sheet

The CSEC Geography syllabus is organised around three broad themes: (1) Practical Skills and Fieldwork, (2) Natural Systems (weather, climate, landforms, ecosystems), and (3) Human Systems (population, settlement, economic activity, development).

Mapwork skills tested include four- and six-figure grid references, measuring straight and curved distances using the scale, calculating gradient (vertical interval divided by horizontal distance, expressed as a ratio), and giving bearings in degrees from grid north.

Relief on a topographical map is shown by contour lines; closely spaced contours indicate steep slopes, widely spaced contours indicate gentle slopes, and V-shaped contours pointing upstream mark river valleys.

Cross-sections (profiles) are drawn by transferring contour heights along a straight line to graph paper and joining the plotted points; vertical exaggeration = vertical scale divided by horizontal scale.

Aerial photographs: vertical photographs are taken looking straight down (used for mapping), oblique photographs are taken at an angle (useful for identifying land use and settlement patterns).

Fieldwork follows a sequence: state an aim or hypothesis, choose sampling method (random, systematic, stratified), collect data using instruments and recording sheets, present data in graphs/maps, then analyse and evaluate limitations.

Weather instruments and units: rain gauge (mm), maximum/minimum thermometer (degrees Celsius), barometer (millibars or hectopascals), anemometer (km/h), wind vane (direction), hygrometer (relative humidity %).

Data presentation rules: line graphs for continuous change over time, bar charts for comparing categories, pie charts for proportions of a whole, scatter graphs for relationships between two variables, and choropleth maps for showing density or distribution by area.

Development indicators: GDP per capita, life expectancy, literacy rate, infant mortality rate, and the Human Development Index (HDI, combining income, health and education); no single indicator fully measures development.

Weather vs climate: weather is the short-term state of the atmosphere at a place; climate is the average weather conditions of a place over about 30 years.

Rainfall types: convectional (intense heating, afternoon thunderstorms, common in the tropics), relief/orographic (air forced over mountains, rain on windward side, rain shadow on leeward side), and frontal (warm and cold air masses meeting, common in temperate latitudes).

Caribbean climate controls: the North Atlantic subtropical high, the northeast trade winds, the seasonal migration of the Intertropical Convergence Zone (ITCZ), sea-breeze and land-breeze effects, and altitude.

Tropical cyclone formation requires sea-surface temperatures of about 26 degrees Celsius or higher, low wind shear, abundant moisture, and at least 5 degrees of latitude from the equator (Coriolis effect); the Atlantic season runs June to November.

Plate boundaries: divergent (plates move apart, mid-ocean ridges, shield volcanoes), convergent (subduction, deep ocean trenches, explosive composite volcanoes, fold mountains), and transform (plates slide past, shallow earthquakes).

Volcanic and earthquake hazards in the Caribbean relate to the subduction of the Atlantic plate beneath the Caribbean plate, producing the Lesser Antilles volcanic arc and the Puerto Rico trench.

River processes: erosion (hydraulic action, abrasion, attrition, solution), transportation (traction, saltation, suspension, solution), and deposition; the long profile shows a steep upper course, gentler middle course and flat lower course with floodplain and levees.

Population concepts: birth rate, death rate, natural increase, migration, population pyramid shapes (expansive, stationary, constrictive), and the demographic transition model stages from high stationary to low stationary.

Settlement and economic activity: site vs situation, urban land-use zones (CBD, inner city, suburbs), rural settlement patterns (dispersed, nucleated, linear), and the sectors of employment (primary, secondary, tertiary, quaternary).

Sustainable development balances economic growth, social equity and environmental protection; Caribbean examples include ecotourism, marine protected areas, and renewable energy such as geothermal and solar projects.

Command words: 'state' or 'name' needs a brief fact; 'describe' needs what is seen or what happens; 'explain' needs reasons using 'because' or 'therefore'; 'compare' needs both similarities and differences; 'evaluate' or 'discuss' needs arguments for and against plus a judgement.

Mark allocation guides length: a 2-mark question typically needs two distinct points; a 6-mark structured question needs several developed points, often with an example or case study.

Case studies must be specific: name the country, location, dates or scale of the event (for example the 2021 La Soufriere eruption on St Vincent) rather than describing a generic example.

Use data from stimulus material: quote figures, calculate differences or percentages, and refer to trends shown in graphs or tables to gain application marks.

Diagram rules: draw with a pencil, label all features, give a title, include a key where needed, and keep diagrams large enough to label clearly; diagrams can earn marks where questions say 'with the aid of a diagram'.

Calculations commonly required: gradient (rise over run), map distance using scale, percentage change, population density (people divided by area in square kilometres), and rate of natural increase (birth rate minus death rate per 1,000).

Units must always be stated: mm for rainfall, degrees Celsius for temperature, km or m for distance, people per square kilometre for population density, and degrees or compass points for bearing.

Common errors to avoid: confusing weather with climate, mixing up erosion and weathering, describing the location of a feature when asked to explain its formation, and omitting units from calculations.

Scale types: statement scale (1 cm represents 1 km), representative fraction (1:50,000), and linear scale (a bar); at 1:50,000, 1 cm on the map equals 0.5 km on the ground.

Four-figure grid references give the grid square (eastings read first, then northings); six-figure references give a precise point by subdividing each square into tenths.

Gradient formula: gradient = vertical interval divided by horizontal distance; both must be in the same units, and the answer is expressed as a ratio such as 1:8.

Contour interval is the vertical height between successive contour lines; the steeper the slope, the closer the contours, and contours never cross each other except at an overhang or cliff.

Drainage pattern recognition: dendritic (tree-like, uniform rock), trellised (parallel main streams with right-angle tributaries, folded rock), radial (streams flowing outward from a peak), and deranged (irregular, marshy areas).

Photograph interpretation: identify foreground and background, use shadows to judge sun direction, and infer land use from visible features such as terraced slopes, roads, or rooftops.

Graph selection rules: use a divided bar or pie chart for parts of a whole, a line graph for time series, a bar chart for discrete categories, and a scatter graph with a line of best fit for correlation.

Sampling terms: random sampling gives every item an equal chance, systematic sampling uses a fixed interval, and stratified sampling divides the population into groups before sampling.