Lesson Y9-U03-L03

Y9-U03-L03 Why is the UK's Weather So Changeable? Quiz: KS3 Geography, Unit 15

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson Y9-U03-L03, Why is the UK's Weather So Changeable?: 20 multiple choice questions for the KS3 Geography (National Curriculum), Unit 15: Year 9: Weather, Climate and a Changing Atmosphere, written with Revision Ninja.

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The 20 questions

  1. Which two things does an air mass pick up from the region it forms over?

    • Temperature and moisture.
    • Speed and direction.
    • Salt and dust only.
    • Height and pressure only.

  2. Which air mass forms over the warm Atlantic and brings warm, wet weather to the UK from the south-west?

    • Arctic Maritime.
    • Tropical Maritime.
    • Polar Continental.
    • Tropical Continental.

  3. Which air mass brings cold, dry winter spells to the UK from the east?

    • Polar Maritime.
    • Tropical Maritime.
    • Tropical Continental.
    • Polar Continental.

  4. Which air mass brings hot, dry summer heatwaves from the south?

    • Polar Maritime.
    • Polar Continental.
    • Tropical Continental.
    • Arctic Maritime.

  5. Why is air from the Atlantic usually wetter than air from mainland Europe?

    • Maritime air picks up moisture from the sea, while continental air forms over dry land.
    • Maritime air forms only in winter and so brings snow.
    • Continental air is always colder and forms over the ocean, so it holds more water vapour overall.
    • Continental air comes from the Sun, which makes it wet.

  6. Which air mass arrives from the Arctic to bring cold, wet weather and sometimes snow?

    • Polar Continental.
    • Tropical Maritime.
    • Arctic Maritime.
    • Tropical Continental.

  7. What is an isobar?

    • A line joining places with the same air pressure.
    • A line joining places with the same temperature.
    • A line showing the boundary between two air masses.
    • A line marking the edge of a band of rain.

  8. On a synoptic chart, what do very close isobars indicate?

    • Light winds, because pressure is the same everywhere.
    • Calm, settled weather with clear skies overhead.
    • A new front forming out at sea, which brings calm and settled weather to the coast.
    • Strong winds, because pressure changes steeply over a short distance.

  9. Low pressure on a synoptic chart usually brings which kind of weather?

    • Clear, settled skies with light winds.
    • Heatwave conditions with no cloud at all.
    • Unsettled weather with cloud, wind and rain.
    • Fog that never lifts for a whole week.

  10. What is a front?

    • A band of clear skies that moves across the UK.
    • The boundary where two air masses of different temperature meet.
    • A line joining places that have the same rainfall total.
    • The highest point of a high-pressure system.

  11. Which feature on a synoptic chart is usually linked to a band of rain along its line?

    • The centre of a high-pressure area.
    • The compass direction the wind is blowing from.
    • A single isobar drawn on its own.
    • A front.

  12. Which statement explains why the UK can get several air masses in a single day?

    • The UK lies beside a vast desert, so only hot dry air ever reaches it from the east.
    • The UK has no oceans nearby, so all of its air comes from one direction.
    • The UK sits at a crossroads between warm and cold regions, so air arrives from many directions.
    • The UK is in the middle of a large continent, so its air never changes.

  13. A chart shows a high-pressure area 'H' over the UK with widely spaced isobars. Which weather is most likely?

    • Snow falling steadily across the whole country.
    • A band of thunderstorms moving quickly eastwards.
    • Calm, dry and settled, with light winds.
    • Strong winds and heavy rain all day long.

  14. A synoptic chart shows an 'L' just west of Ireland with tightly packed isobars. What wind would you expect over the UK?

    • Strong winds, because the isobars are packed close together.
    • Gentle breezes, because low pressure always produces light winds.
    • No wind at all, because low pressure is always calm.
    • Light breezes, because isobars far apart create strong winds.

  15. A cold front crosses the UK. What usually happens to the weather as it passes?

    • Clouds disappear and fog forms over the whole country.
    • Heavy rain falls, then the air behind it turns colder and clearer.
    • The sky clears and the air becomes warm and humid straight away.
    • Snow melts and the wind drops to nothing at all.

  16. An air mass from the Sahara is moving towards the UK. Which weather should be expected?

    • Wet, drizzly weather with strong winds from the sea.
    • Foggy and freezing conditions every night.
    • Cold, snowy conditions across the whole country.
    • Hot, dry conditions that may bring a heatwave.

  17. Why could the UK see sunshine, rain and a cold snap all within the same day?

    • The sea freezes and thaws in a single day across the whole UK, because the wind changes direction.
    • Several air masses and fronts can pass over in a few hours, each changing the weather.
    • Every air mass is identical, so the weather rarely changes at all.
    • The Sun moves so fast that it changes the weather every few minutes.

  18. Which feature of the UK's position is the main reason its weather is so changeable?

    • Its distance from the Equator, which is the same as every other country's.
    • Its large deserts, which create dry air all year round.
    • Its location between warm tropical air and cold polar air, beside the Atlantic.
    • Its height above sea level, which is greater than any other country's.

  19. Which judgement best evaluates whether the ocean or the UK's location matters more for its weather?

    • Only the ocean matters, since location plays no part in the UK's weather.
    • Only the location matters, since the Atlantic has no effect on any air mass.
    • Neither matters, since the UK's weather is decided entirely by the Moon.
    • Both matter: the location brings several air masses, and the Atlantic adds moisture to them.

  20. What is a depression?

    • An area of low pressure that brings cloud, wind and rain to the UK.
    • An area of high pressure that brings clear, settled skies.
    • A line on a weather map joining places of equal temperature.
    • A boundary where two rivers of air meet high in the atmosphere.

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