Weather Instuments

Weather Instruments

Open Ended

This instrument is usually found on top of houses. The rooster turns when the wind blows. What do you think it's for?

Meteorologists use instruments to observe the weather.

Their observations help them prepare daily weather forecasts.

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​Weather Instruments

A meteorological thermometer measures the temperature of the atmosphere.

• has a sensor and a scale

• the scale is in Celsius or in Fahrenheit

• The liquid in the sensor rises according to the temperature.

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​Weather Thermometer

It is used to measure air pressure.

It was invented by Evangelista Torricelli in 1643.

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Barometer

It measures the humidity or the water vapor in the air.

A piece of hair in the hygrometer stretches or contracts according to the moisture in the air.

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Hygrometer

It is a simple hygrometer.

It uses a dry-bulb thermometer and a wet-bulb thermometer to measure humidity.

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Psychrometer

It measures wind speed as the cups turn around.

There are mechanical and sonic anemometers.

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Anemometer

It is also called a weathervane.

It determines wind direction.

As the wind blows it turns the arrow to the direction it is headed.

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Wind Vane

It measures the amount of rainfall at a given period of time.

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Rain Gauge

It measures weather conditions from higher altitudes.

It can carry weather instruments to send back information.

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Weather Balloon

It is used to monitor the weather and climate on Earth.

It can photograph, track, and measure the conditions of weather-related events.

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Weather Satellite

It is also called a windcone.

It measures the wind direction and speed.

It is used in airports to help plane landings and takeoffs.

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Windsock

A weather chart displays symbols for weather across a time period.

They help people quickly find out what the weather will be like, so they can plan accordingly.

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Weather Chart