Eduqas GCSE Geography A Theme 5 Weather, Climate and Ecosystems: a complete overview

What this theme actually demands

Theme 5, Weather, Climate and Ecosystems, is the physical-environment strand of Component 2, Environmental and Development Issues. It runs from the changing climate, through the weather of the UK and the world's weather hazards, to how ecosystems function and how people damage and manage them. Eduqas tests precise process knowledge and the ability to apply it to named events, hazards and a biome.

This guide walks through the theme in specification order, then sets out the exam patterns Eduqas repeats. Each part has a matching dot-point page with practice questions; this overview ties them together.

Quaternary and contemporary climate change

The theme opens with climate change: the evidence for change through the Quaternary (ice cores, tree rings, pollen, records), the natural causes (orbital cycles, solar output, volcanic eruptions), the enhanced greenhouse effect and human causes of recent rapid warming, and the consequences (melting ice, rising seas, extreme weather, shifting ecosystems).

UK weather and climate

Next comes UK weather and climate: the controlling factors (latitude, the North Atlantic Drift, prevailing winds, altitude, distance from the sea), the air masses, the contrast between depressions (low pressure, wet and windy) and anticyclones (high pressure, calm and settled), and a recent extreme UK event.

Tropical storms and drought

The theme then covers global weather hazards: how tropical storms form (warm deep water, the Coriolis effect), their structure (eye, eyewall, rainbands) and impacts, and the causes and impacts of drought, with a case study of each and how they are managed.

Ecosystems and biomes

The ecology strand explains how ecosystems work (food chains and webs, nutrient cycling between biomass, litter and soil, energy flow with loss at each step) and the world's biomes, then studies one biome (the tropical rainforest) in detail: its layered structure and the adaptations of its plants and animals.

The human impact on ecosystems

Finally, the theme covers the human impact: the causes and effects of deforestation (lost biodiversity, soil erosion, more carbon dioxide), wider pressures on ecosystems, and the sustainable management of a biome (selective logging, agroforestry, ecotourism, protected areas, international agreements).

How this theme is examined

A typical Eduqas profile for Theme 5:

• Short answer. Describing evidence and distributions, and explaining a single cause, process or adaptation.
• Diagram and data questions. Reading climate graphs, synoptic charts and a storm's structure.
• Case-study questions. Using a named UK event, tropical storm, drought or biome.
• Extended Assess and Evaluate answers. Judging the impacts of a hazard or the success of management, with SPaG marks at stake.

Check your knowledge

A mix of recall and applied questions covering the theme. Attempt them under timed conditions, then check against the solutions.

1. Describe two pieces of evidence for climate change during the Quaternary period. (4 marks)
2. Explain the difference between the natural and human causes of climate change. (6 marks)
3. Explain the difference between the weather of a depression and an anticyclone. (4 marks)
4. Explain the conditions needed for a tropical storm to form. (4 marks)
5. Explain one human cause of drought. (4 marks)
6. Explain how nutrients are cycled in an ecosystem. (4 marks)
7. Explain how plants are adapted to a tropical rainforest. (6 marks)
8. Assess the success of strategies used to manage a tropical rainforest sustainably. (8 marks)