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Anemometer
Measures wind speed in mph. The cups
catch the wind, turning a dial attached to the instrument. The
dial shows the wind speed.
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Barometer
Measures air pressure in millibars.
An Italian scientist named Torricelli built the first barometer
in 1643.
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Thermometer
Measures air temperature. Thermometers
work because matter expands when heated. When air around the thermometer
heats the liquid, the liquid expands and moves up the tube.
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Wind Vane or Wind Sock
Measures wind direction by pointing
towards North, East, South, West or a combination ex. Northwest.
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Weather Balloon/Radiosonde
Measures weather conditions higher in
the atmosphere.
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Rain Gauge
Measures the amount of rainfall in mm.
Not only does a rain gauge measure rainfall, but also all other
forms of precipitation.
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