GCSE Geography: Hot Deserts

In the living world unit, many GCSE Geography students study hot deserts alongside tropical rainforests; in AQA 8035, for example, hot deserts are one of two optional environments. This material covers the whole topic: how a hot desert works as an ecosystem, how people use it, and how its fragile fringes can turn into desert.

It begins with location and climate. Hot deserts lie roughly between 15° and 30° north and south of the equator, where dry air descends under subtropical high pressure. They receive less than 250 mm of rain a year, and their clear skies produce scorching days and cold nights, a large diurnal temperature range. You then see how climate, thin sandy or stony soils, plants, animals and people depend on one another, and why a single rain shower can set off a burst of life.

Adaptation questions look at plants that cut water loss with spines and waxy skins and reach water with long tap roots or wide shallow roots, and at animals such as the camel and the fennec fox, together with behaviour like nocturnal activity and burrowing. The development section weighs up opportunities (minerals, solar energy, irrigated farming, tourism) against the challenges of extreme heat, water supply and inaccessibility.

The final part deals with desertification on desert fringes such as the Sahel: its causes (climate change, population growth, removal of fuel wood, overgrazing, over-cultivation and soil erosion) and the strategies used to reduce it, from stone lines and terracing to tree planting and appropriate technology like solar cookers.

The material offers a quiz with explanations, flashcards for key terms, a printable written sheet of eight exam-style tasks (from explaining the climate to evaluating desertification strategies) and an oral exam in which an examiner asks you one question at a time and gives short feedback at the end. Add details from the desert your class studied as a case study to strengthen your written answers.

• Explain the location and climate of hot deserts, including the large diurnal temperature range
• Describe the interdependence of climate, soils, plants, animals and people
• Explain plant and animal adaptations to hot desert conditions
• Assess development opportunities and challenges in hot deserts
• Explain the causes of desertification on desert fringes
• Evaluate strategies to reduce the risk of desertification

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: hot deserts).