What is an air mass?
An air mass is a large areas of air that has a similar temperature and humidity level.
What influences the type of air mass?
The type of air mass is affected by where it comes from and what is passes over. This is because the air takes on properties from the surfaces it travels over.
Why is the weather of the UK so changeable?
The weather of the UK is very changeable because it is affected by a number of different air masses.
What are the air masses that affect the UK?
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