Wind

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Arrival Craft:

I gave out some sheets with pictures of clouds (which I took from Wild Weather), some card, cotton wool and foil. The children made their own cloud identification charts.

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Gather Together:

We talked about pressure. I put a balloon over the top of an empty bottle and lowered it into a cup of boiling water. The balloon expanded as the air inside the bottle got hotter.

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We then made barometers (following the instructions from Easy Science for Kids). Each child stretched a balloon over the top of a glass jar. Then we taped a long straw to the middle of the balloon. We made card board guides so that we could see when the stick moved up or down.

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I showed the children an anemometer next and talked about how it measured wind speed.

The children made their own simple anemometers by attaching a polystyrene ball to a string, then tying the other end if the string to the top of half a paper plate.

We had a discussion about calibration. The children took it in turns to calibrate their anemometers by holding them in front of a fan alongside the electronic anemometer.

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