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Definition
| 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. |
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| 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. |
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Definition
| A RAIN GAUGE measures the amount of rain that has fallen over a specific time period. |
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| A WIND VANE is an instrument that determines the direction from which the wind is blowing. |
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| An ANEMOMETER measures wind speed. The cups catch the wind, turning a dial attached to the instrument. The dial shows the wind speed. |
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Definition
| A WIND SOCK is a conical textile tube, which resembles a giant sock, designed to indicate wind direction and relative wind speed. |
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| WEATHER MAPS indicate atmospheric conditions above a large portion of the Earth’s surface. Meteorologists use weather maps to forecast the weather. |
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| A WEATHER BALLOON measures weather conditions higher up in the atmosphere. |
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| WEATHER SATELLITES are used to photograph and track large-scale air movements. Then meteorologists compile and analyze the data with the help of computers. |
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Term
| A ______ measures the air temperature. Most ________ 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. |
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Definition
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Term
| A ____________ measures air pressure. It tells you whether or not the pressure is rising or falling. A rising ____________means sunny and dry conditions, while a falling ____________means stormy and wet conditions. An Italian scientist named Torricelli built the first barometer in 1643. |
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Definition
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Term
| A ____________ measures the amount of rain that has fallen over a specific time period. |
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Definition
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Term
| A ____________ is an instrument that determines the direction from which the wind is blowing. |
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Definition
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Term
| An _____________ measures wind speed. The cups catch the wind, turning a dial attached to the instrument. The dial shows the wind speed. |
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Definition
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Term
| A ____________ is a conical textile tube, which resembles a giant sock, designed to indicate wind direction and relative wind speed. |
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Definition
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Term
| _____________________ indicate atmospheric conditions above a large portion of the Earth’s surface. Meteorologists use _____________ to forecast the weather. |
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Definition
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Term
| A ________________ measures weather conditions higher up in the atmosphere. |
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Definition
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Term
| ________________ are used to photograph and track large-scale air movements. Then meteorologists compile and analyze the data with the help of computers. |
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Definition
WEATHER SATELLITES
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