What controls the weather of the UK, and how do weather hazards form and affect people?
Key Idea 5.2: weather patterns and processes, the difference between weather and climate, the air masses and low-pressure (depression) and high-pressure (anticyclone) systems that bring UK weather, and the causes, effects and management of weather hazards including UK storms and tropical storms.
A focused answer on Key Idea 5.2 for WJEC GCSE Geography Unit 2: weather and climate, the air masses and depressions and anticyclones that shape UK weather, and the causes, effects and management of weather hazards including UK storms and tropical storms.
Reviewed by: AI editorial process; not yet individually human-reviewed
Have a quick question? Jump to the Q&A page
Jump to a section
What this dot point is asking
This dot point covers Key Idea 5.2 of WJEC Unit 2: weather patterns and processes. You need the difference between weather and climate, the air masses and the low-pressure (depression) and high-pressure (anticyclone) systems that bring UK weather, and the causes, effects and management of weather hazards, including UK storms and tropical storms.
Weather, climate and air masses
Depressions and anticyclones
UK weather hazards
Tropical storms
Try this
Q1. What is the difference between weather and climate? [Knowledge recall]
- Cue. Weather is the day-to-day state of the atmosphere (temperature, rain, wind, cloud); climate is the average weather of a place taken over a long period of about thirty years.
Q2. Explain why tropical storms form only over certain oceans. [Short explanation]
- Cue. They need warm ocean water of about 27 degrees Celsius to provide the energy from rising, condensing moist air, and they need the Coriolis effect to make them spin, so they form in the tropics but not right on the Equator or over cool seas.
Exam-style practice questions
Practice questions written in the style of WJEC exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
WJEC Unit 2 (Theme 5)4 marksDescribe the weather brought by an anticyclone in summer.Show worked answer →
A short data-response describe question. Reward described weather conditions linked to high pressure.
Settled, dry weather. An anticyclone is an area of high pressure with sinking air, so skies are clear and the weather is dry and settled, with little wind.
Temperatures. In summer, clear skies bring hot, sunny days and warm nights; the calm conditions can also lead to haze or pollution building up.
Top marks. Two or three clear features: dry, clear, calm, hot and sunny in summer.
WJEC Unit 2 (Theme 5)6 marksExplain how a tropical storm forms.Show worked answer →
A short explain question (levels marking). Reward an ordered sequence of conditions and processes.
Conditions. Tropical storms form over warm ocean water (about 27 degrees Celsius or more) in the tropics, where warm, moist air rises rapidly.
Development. The rising warm, moist air cools and condenses, releasing heat that powers the storm and draws in more air. The Earth's rotation (the Coriolis effect) makes the system spin around a calm central eye. Strong winds and heavy rain develop, and the storm grows as it moves over warm water.
Top band. Link warm sea, rising moist air, condensation, latent heat and spin to the formation of an intense rotating storm.
Related dot points
- Key Idea 5.1: climate change during the Quaternary period, the evidence for natural climate change (ice cores, tree rings, pollen and historical records), the natural causes of climate change (orbital changes, sunspots, volcanic activity), and the contribution and consequences of recent human-induced (anthropogenic) warming.
A focused answer on Key Idea 5.1 for WJEC GCSE Geography Unit 2: climate change during the Quaternary, the evidence (ice cores, tree rings, pollen), the natural causes (orbital changes, sunspots, volcanoes), and the contribution and consequences of recent human-induced warming.
- Key Idea 5.3: processes and interactions within ecosystems, the components of an ecosystem (biotic and abiotic), the flow of energy through food chains, food webs and trophic levels, the cycling of nutrients, and the global distribution and characteristics of major biomes.
A focused answer on Key Idea 5.3 for WJEC GCSE Geography Unit 2: the biotic and abiotic components of ecosystems, energy flow through food chains, food webs and trophic levels, nutrient cycling, and the global distribution and characteristics of major biomes.
- Key Idea 5.4: human activity and ecosystem processes, the interdependence of the tropical rainforest (climate, soils, nutrient cycle, plants and animals), the causes and impacts of deforestation, and strategies for the sustainable management of an ecosystem.
A focused answer on Key Idea 5.4 for WJEC GCSE Geography Unit 2: the interdependence of the tropical rainforest, the causes and impacts of deforestation, and strategies for the sustainable management of an ecosystem.
- Key Idea 3.2 (Theme 3): vulnerability and hazard reduction, why people live in tectonically active areas, why the impacts of earthquakes and volcanoes differ between richer and poorer countries, and how hazards can be reduced through prediction, protection (building design) and preparation (planning and education).
A focused answer on Key Idea 3.2 for WJEC GCSE Geography Unit 1 (Theme 3): why people live in hazardous areas, why earthquake and volcano impacts differ between richer and poorer countries, and how risks are reduced through prediction, protection and preparation.
- Key Idea 6.3: water resources and their management, the global pattern of water supply and demand, the causes of water surplus and water deficit (scarcity and stress), the impacts of an inadequate water supply, and the strategies used to manage water resources sustainably.
A focused answer on Key Idea 6.3 for WJEC GCSE Geography Unit 2: the global pattern of water supply and demand, the causes of water surplus and deficit, the impacts of an inadequate water supply, and the strategies used to manage water resources sustainably.
Sources & how we know this
- WJEC GCSE Geography (Wales) specification (3110) — WJEC (2019)