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    【課程】素養課:趣味實驗小記錄

    發布日期: 2016-06-03 瀏覽次數:

       這周五我們在素養課上——趣味物理做了一個實驗,名字叫——溪流。

       這個實驗材料是:玻璃杯,一張紙,一個打火機。先用紙把玻璃杯緊緊地包裹住,再把剩下的一些紙卷成一個像香煙的模樣,但是不能太粗。最后再用打火機點燃,吹滅,最后把杯子橫過來,過一兩分鐘就可以看到杯底“云霧繚繞”。

    這是為什么呢?老師告訴我們煙霧流入杯底是因為溫度差。而導致杯子底部有煙霧的原因是熱空氣向上,冷空氣向下。

    第二個實驗是高斯炮。老師在磁鐵后面擺了兩個有磁性的小球,在用另一個小球在后面一推。最后面的那個小球會像出膛的子彈一樣飛射出去。經過多次試驗,我和我同桌小王得出結論:磁鐵在鋼球串最靠近入射的位置時小球彈出最快,并球串中小球不多也不少時小球彈出最快。(作者為預備年級 陳志翔)


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