Weather Instruments
Tools that Meteorologist uses to predict weather
Thermometer
Glass tubes that have mercury or alcohol that measures the temperature of the air around it. When the air heats up the tube the liquid expands and makes the liquid go up. A scale on the thermometer measures the actual temperature.
Barmometer
It tells you whether or not the pressure is rising or falling. A rising barometer means sunny and dry conditions, while a falling barometer means stormy and wet conditions. An Italian scientist named Torricelli built the first barometer in 1643.
Sling Physchrometer
Two thermometers are used in a sling psychrometer. Wet the cloth of one of the thermometers and swing the psychrometer around a few times. Water evaporates from the cloth, causing the temperatures on that thermometer to be lower the the other.
Anemometer
Measures wind speed. The cups catch the wind, turning a dial attached to the instrument. The dial shows the wind speed.
Weather Maps
Indicates atmospheric conditions above a large portion of the Earth's surface. Meteorologists use weather maps to forecast the weather.
Weather Satellites
Are used to photograph and track large-scale air movements. Then meteorologists compile and analyze the data with the help of computers.
Your Eyes
Are one of the the best ways to help detect the weather. Always keep an eye at the sky and you'll usually be on top of weather conditions.