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五(4)班张晓琳在学习了课文《天火之谜》之后,知道了避雷针是美国科学家富兰克林发明的,但是她不明白避雷针究竟是如何避雷的。于是她就上网查找到了这样的资料,和同学们一道来分享。在雷雨天气,我们有时会看到一些参天大树被雷电击倒,而周围的一些高塔、高楼等高层建筑却安然无恙。这是什么原因呢?原来这些参天大树由于受到带大量电荷的云层的感应,也带上了大量电荷,积累的电荷过多时,树和云层之间就开始放电,树就被击倒。
Five (4) classes Zhang Xiaolin learned the text “the mystery of the sky fire” after knowing the lightning rod invented by the American scientist Franklin, but she did not understand how the lightning rod is how to lightning protection. So she found the Internet to find such information, and classmates to share. In thunderstorms, we sometimes see some towering trees struck by lightning, while some tall towers and tall buildings around are safe and sound. What are the causes? It turned out that these towering trees were heavily charged by heavy clouds of charge, and when the accumulated charge was too high, the tree and clouds started to discharge and the tree was knocked down.