Science: Forecasting

The second two weeks of school we learned about forecasting using Layers of Learning, year 2 unit 2.

We read a book about weather words.
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We learned about prevailing winds and pressure zones.
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We made a weather station with a rain gauge, wind sock, barometer, and thermometer.
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We learned about wind shear and watched a video about a plane crash from 1985.
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We made a psychrometer. We placed two thermometers side by side and put a cotton ball soaked in water on the bulb of one of them. Then we used a fan to blow air on the thermometers for 5 minutes. The dry thermometer didn’t change temperature very much, but the wet thermometer dropped by almost 4 degrees Celsius.
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We demonstrated how a thermometer works. We mixed half water half rubbing alcohol in a bottle. We inserted a straw and then sealed the top with clay. We used a hair dryer to blow warm air on the bottle. As the liquid inside heated up, it expanded and had nowhere to go but up the straw.
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We learned about wind speed and made an anemometer. We discovered that the wind was blowing from the southwest that day.
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