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The pressure of the air around us changes constantly. These changes are associated with changes in the weather. When the air pressure is high (also called a high), the weather is mostly likely to be fair and clear. When the air pressure is low (called a low), stormy weather is mostly likely in the forecast.
In this experiment, you will make yourown barometer and use it for a week or more to forecast weather in your area. While professional measure air pressure in mg of mercury, you will be able to measure pressure by watching your pointer dip up or down.By noting the position of your pointer and associating it with a particular type of weather, you will be able to predict weather. This is a good experiment to do if you live in an area where the weather changes frequently. If the weather does not change much, consider doing a different experiment.
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