GCSE Geography: Cold Environments

Cold environments are the other optional ecosystem in the living world unit of some GCSE Geography courses; in AQA 8035, for example, students study either hot deserts or cold environments alongside tropical rainforests. This material covers polar and tundra environments from their physical characteristics to the difficult balance between development and conservation.

The first part explains how these environments work. Polar regions are ice-covered, extremely cold and very dry. The tundra has long, dark, freezing winters and short, cool summers. Beneath much of it lies permafrost, ground that stays frozen all year; only the thin active layer on top thaws in summer, and because meltwater cannot drain through the frozen ground, the surface becomes waterlogged. Cold temperatures slow decomposition, so soils are thin, acidic and poor in nutrients. You see how climate, permafrost, soils, plants, animals and people depend on one another.

Adaptation questions cover low-growing cushion plants with shallow roots and rapid summer flowering, and animals that keep warm with thick fur, fat and small ears, blend in with white winter coats, migrate or hibernate. You then consider why biodiversity is low and fragile, with simple food webs that recover slowly from damage.

The second part turns to people. Cold environments offer opportunities in minerals, oil and gas, fishing and tourism, but extreme cold, inaccessibility and building on permafrost make development difficult and expensive: heat from buildings and pipelines can thaw the ground and cause subsidence, so structures are raised on piles or supports. Finally you evaluate how cold environments can be protected: technology, government regulation, international agreements such as the Antarctic Treaty and its environmental protocol, and the work of conservation groups.

The material offers a quiz with explanations, flashcards for key terms, a printable written sheet of eight exam-style tasks and an oral exam in which an examiner asks you one question at a time and ends with short feedback. Add details from the cold environment your class studied, such as Alaska or Svalbard, to your written answers.

• Describe the physical characteristics of polar and tundra environments, including permafrost and the active layer
• Explain the interdependence of climate, permafrost, soils, plants, animals and people
• Explain plant and animal adaptations to cold conditions
• Explain why biodiversity in cold environments is low and fragile
• Assess development opportunities and challenges, including building on permafrost
• Evaluate strategies for balancing development and conservation

Practice material written by Zestly, based on the DfE GCSE geography subject content (ecosystems) and board specifications such as AQA GCSE Geography 8035, section 3.1.2 (the living world: cold environments).