UK weather: high and low pressure weather systems

Discover the intricacies of UK weather systems, from anticyclones to depressions and how they impact the climate. Learn about the main air masses affecting the UK and the LAPADO influences on weather. Explore the dynamics of high and low-pressure systems, including their effects on weather patterns. Gain insights into depressions, fronts, isobars, and synoptic charts in this comprehensive guide.

• UK weather
• climate
• anticyclones
• depressions
• LAPADO

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Uploaded on Mar 06, 2025 | 0 Views

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1. UK weather: high and low pressure weather systems 1. What is an anticylcone? 2. What is a depression? 3. Name the 4 main air masses that affect the UK climate 4. (Just write the missing words, not the whole sentences). When air rises it s temperature _________. This mean that the water vapour will _________. This forms clouds and therefore there is a higher chance of ___________. 5. We learnt about LAPADO as the six influences on UK weather and climate. What does each letter stand for?

2. UK weather: high and low pressure weather systems 1. What is an anticylcone? An area of high atmospheric pressure 2. What is a depression? An area of low atmospheric pressure 3. Name the 4 main air masses that affect the UK climate tropical maritime, tropical continental, polar maritime, polar continental 4. (Just write the missing words, not the whole sentences). When air rises it s temperature drops. This mean that the water vapour will condense. This forms clouds and therefore there is a higher chance of precipitation. 5. We learnt about LAPADO as the six influences on UK weather and climate. What does each letter stand for? Latitude, Air mass, Pressure, Altitude, Distance from the sea, Ocean currents [and Seasons as well]

3. 06/03/2025 What weather do high and low pressure systems bring to the UK? Watch this to get an excellent introduction Copy and complete the sentences below: Low pressure = warm air rises cools and condenses High pressure = cold air sinks no condensation occurring 1. 2. 3. 4. Low pressure any time brings weather High pressure in the summer brings weather High pressure in the winter brings .weather Wind is when air blows from to .

4. Depressions (low pressure systems) met office video Read p204-205 new wider world 1) 2) 3) 4) 5) 6) 7) What are depressions? What type of weather do they bring? Where do depressions usually form? What is a front? What are isobars? create a simple copy of diagram 12.11 Describe what happens to the weather as a warm front approaches Describe the weather in the warm sector Describe what happens as the cold front passes Describe what happens after the cold front passes Make a sketch of one of the synoptic charts on figure 12.13 (you don t need to add in the isobars) 8) 9) 10) 11)

5. Depressions (low pressure systems) met office video Read p204-205 new wider world 1) 2) 3) 4) 5) 6) 7) What are depressions? Areas of low pressure What type of weather do they bring? Rain, wind and clouds Where do depressions usually form? Over the Atlantic and from West to East What is a front? Where two types of air meet What are isobars? Lines that join up area of equal pressure create a simple copy of diagram 12.11 Describe what happens to the weather as a warm front approaches clouds form, lower and thicken Describe the weather in the warm sector broken cloud, drizzle or even dry weather Describe what happens as the cold front passes deteriorates rapidly. Gale force winds swirl N to W, heavy rainfall but short duration, temperatures fall Describe what happens after the cold front passes weather slowly improves, pressure increased sunny intervals Make a sketch of one of the synoptic charts on figure 12.13 (you don t need to add in the isobars) 8) 9) 10) 11)

6. Anticyclones(high pressure systems) 1) What are isobars? 2) When the isobar lines are closer together that means there is high/low pressure 3) Warm/cold air rises 4) High pressure brings wet and cloudy/clear skies 5) Is there high/low pressure at the equator?

7. Anticyclones(high pressure systems) Read p206 new wider world 1) What are anticyclones? 2) What type of weather do they bring? 3) How often do we get anticyclones in Britain? How long do they stay for? 4) Which direction does the wind blow in and how strong are they? 5) What are the main differences between winter and summer anticyclones?

8. Anticyclones(high pressure systems) Read p206 new wider world 1) 2) 3) What are anticyclones? High pressure systems What type of weather do they bring? Fair weather How often do we get anticyclones in Britain? How long do they stay for? Less frequently from several days to even weeks Which direction does the wind blow in and how strong are they? Clockwise and gentle What are the main differences between winter and summer anticyclones? Summer - warm, sunny conditions. At night it is very cold. Thunderstorms can also form. Winter temperatures remain low but the weather is dry and bright. Nights are very cold. Frost and fog may occur. 4) 5)

9. Weather Charts Carol explains Using page 206 answer q 4 on p. 209