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Rain G
Barometer
The barometer was made in 1643.It measures air pressure and tells you if the air pressure is rising or falling.It's shape is a closed circle covered in glass.A rising barometer means sunny and dry conditions, while a falling barometer means stormy and wet conditions.
Thermometer
The thermometer was made in 1709.It is used to measure the air temperature.Most of the thermometers are closed glass tubes containing liquid such as alcohol or mercury.
When air around the tube heats up, the liquid moves up the scale and when it stops it shows the exact temperature!
Five
instruments
of weather
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