Why Does Precipitation Occur and the UK Climate
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Transcript of Why Does Precipitation Occur and the UK Climate
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Why does precipitation occur?
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Precipitation is water from the atmosphere. It
can be in solid or liquid form.
Three different types of precipitation are
The three states of water
We also need to understand the three
different states of water and how theytransfer from one to the other.
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Condensation
EvaporationFreezingMelting
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The water cycle
To understand why precipitation occurswe first need to remember the watercycle.
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The water cycle in more detail
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The water cycle definitions!
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The water cycle song
..\..\..\..\year 10\My Geography\Climate,
environment and people gs\Weather and
climate\WaterCycle.wmv
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The adventures of Ronnie the
Raindrop Your task is to fill in the cartoon strip
to show what happens to Ronnie as he
goes around the water cycle. You must write in the text boxes
provided to explain what is happening to
Ronnie. You should try to use as much
geographical terminology as possible.
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Precipitation occurs when wet air rises.
After this happens the three Cs will bringrain.
The three CsWhen wet air rises it .. Cools then condenses to form water droplets
in the form of cloud.
Water droplets in the cloud join together toform rain droplets.
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Why does it rain?
There are three main types
of rainfall relief,convectional and frontal.
In all three situations, rainfall
occurs because (wet) airrises. Air contains water
vapour and as the air rises it
cools and condensation can
occur. This means that the
water vapour returns backinto minute droplets of water
and falls as rain!
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Convectional rain
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Relief rain
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Frontal rain
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Weather and Climate Bingo!
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Snowdonia: Relief rain
Abedeen:
Rain shadow
Prevailingwind
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The global weather circulation in the mid-latitudesflows fromWest to East.
The UK receives a lot of precipitation because it hasthe Ocean immediately to its .The air picks up water from the ocean and carries itas . .. into the UK.
The majority of our precipitation is frontal as the air coming from the West is forced to because of and cold air coming together.
Missing words: wet, water vapour, rise, West, Atlantic,
warm
The reason the West of the UK is wetter than theEast is
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In the UK we do not get very much convectional
precipitation. This is because ..
When we do, it is characterised by large
Summer thunderstorms.
Qs
Hot air rises, why then doesnt the Sahara desert
get much precipitation?
Why does it snow on mountain tops when it
rains down in the valleys?
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Why does the temperature vary
across the UK?
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July temperatures
Isotherms are lines
joining areas ofequal temperature.
Iso means the
same.
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Why is the South of Britain warmer than the North?
Therefore, the suns rays are more concentrated in
the South rather than the North of Britain.
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January temperatures
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Why is it warmer in the West in January?
The North Atlantic Drift is a warm ocean current that
brings higher temperatures to the west of the UK. TheNorth Atlantic Drift starts its journey in the Gulf of Mexico.
