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The world around us
What does
weather
mean?
People often think that weather and climate are the same thing,
but they are not.
Climate refers to the typical
atmospheric conditions
in an area over a long period
of time. Weather, in contrast, refers to atmospheric conditions in an area at
a specific moment. We use instruments to measure these conditions.
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2
Are these people talking about weather or climate? Listen and check
your answers.
a)
‘Summers are very hot where we live.’
b)
‘It’s hot today.’
G
E T T I N G S T A R T E D
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Atmospheric conditions and instruments
Temperature
of the
atmosphere such as
hot or cold
Instrument: thermometer
Precipitation.
Rain, snow or hail
Instrument: rain gauge
Wind velocity
or speed. Wind can
blow fast, slow or not at all
Instrument: anemometer
Wind direction,
such as north or south
Instrument: weather vane
Air pressure.
Air has weight,
so it presses down on
the Earth. Its weight
varies according to
the place and other
conditions
Instrument: barometer