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风的形成

适用年级 1-6年级

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原理 

风是由空气的流动形成,空气被蜡烛加热后变成热空气,热空气比冷空气则通过底部的小孔进行补充,热空气与冷空气对流,在风管内形成了空气流动,产生了风。

目的 

了解风是如何形成的。

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