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Weather Systems
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Weather Systems

This Geography quiz will challenge you on weather systems. A popular topic of conversation in many areas of the world is the weather. Forecasting the weather is a difficult task because the atmosphere is very large and made of a mixture of gases that are constantly moving around. Luckily for weather forecasters, weather systems can make their job easier. As they pass a particular place, a predictable sequence of weather changes can be seen.

The rotation of the Earth, different amounts of heating in different areas of the Earth and high-altitude winds called the jet stream control the movement of weather systems around the Earth. The UK is in a wind belt known as the Westerlies and most weather systems arrive from the Atlantic Ocean.

1.
Which of the following is NOT true?
A warm front is formed where a mass of warm air meets another mass of warm air
A cold front is the last part of a depression to pass
An occluded front is a front that is formed when a warm and cold front merge together
In profile, a warm front is less steep than a cold front
A warm front is where a mass of warm air meets a mass of COLD air
2.
During the summer in Britain, high pressure systems bring which type of weather?
Hot and rainy
Cold and rainy
Cold and clear
Hot and dry
This is because air that is sinking towards the Earth's surface does not form clouds, so you get nice sunny days with lots of sunshine
3.
When a weather system arrives on land from the sea, it:
usually contains more moisture than if it had arrived from on a land mass
usually contains less moisture than if it had arrived from on a land mass
usually contains the same amount of moisture as it would if it had arrived from on a land mass
is impossible to say if it contains any moisture
Air that has passed over an expanse of water will usually contain more moisture in the form of water vapour than air that has passed over land
4.
Why do most hot, dry deserts occur at latitudes of about 30° north and south?
There are no oceans at these latitudes so there can be no precipitation
This is where the Sun's rays are hottest
The air here is always sinking so cloud formation is rare
The air here is always rising so cloud formation is rare
These areas are called the horse latitudes and the weather is generally calm with low precipitation. No-one knows why they are called the horse latitudes for certain, but there are several theories
5.
The majority of the weather systems that cross the British Isles come from which direction?
North
East
South
West
The UK's weather systems mainly arrive from the Atlantic Ocean
6.
At a warm front:
the warmer air rises above the cooler air
the cooler air rises above the warmer air
you get a temperature inversion
no clouds are formed
As the warmer air rises, it cools and some of the water vapour can condense to form clouds
7.
As a depression passes, which clouds would you see first?
Cumulus
Altostratus
Nimbus
Cirrus
These are nicknamed mares tails because of their shape
8.
Which of the following statements is correct?
An anticyclone is an area of wet and windy weather
The air in an anticyclone is sinking and so no clouds form
The air in an anticyclone is rising and so no clouds form
An anticyclone is also called a typhoon
This is why you get nice weather when a high pressure weather system arrives
9.
What is a weather front?
An area where weather and climate merge together
The place where all of the world's weather comes from
An area where two air masses meet
An area where cool air is rising above warm air
A weather front has a mass of warmer air on one side and cooler air on the other
10.
As a depression passes, which of the following sequences of weather are you likely to experience?
A period of clear skies and settled weather
Light rain, followed by drizzle, then heavy rain followed by clearer weather then some showers
Some drizzle followed by two days of heavy rain
Some drizzle, followed by light rain, clear weather, heavy rain then showers
If you picture the diagram of a cross section through a depression, it can help you to work out this answer
You can find more about this topic by visiting BBC Bitesize - Weather and climate

Author:  Kev Woodward

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