I had a great visit Wednesday morning at Prichard Elementary School in Grayson, Kentucky. I spoke to all the fourth graders about weather forecasting and weather instruments. Below is a group photo.
They were a fantastic and very smart group of students! They had many great questions for me. I want to thank Mrs. Lisa Baldwin, Mr. McGlone, the Principal and the other fourth grade teachers for having me. Also, a special shoutout to 4th grader, Kaylee Lewis, who first contacted me about visiting Prichard. Keep up the great work. Go Yellow Jackets!
Here's some of the weather instruments I chatted about to the students.
A THERMOMETER measures the air temperature. Most thermometers are closed glass tubes containing liquids such as alcohol or mercury. When air around the tube heats the liquid, the liquid expands and moves up the tube. A scale then shows what the actual temperature is.
A BAROMETER measures air pressure. 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.
A RAIN GAUGE measures the amount of rain that has fallen over a specific time period.
A WIND VANE is an instrument that determines the direction from which the wind is blowing.
An ANEMOMETER measures wind speed. The cups catch the wind, turning a dial attached to the instrument. The dial shows the wind speed.
WEATHER MAPS indicate atmospheric conditions above a large portion of the Earth's surface. Meteorologists use weather maps to forecast the weather.
A HYGROMETER measures the water vapor content of air or the humidity.
A WEATHER BALLOON measures weather conditions higher up in the atmosphere.
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.
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