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    摩擦起電六年級日記

    時間:2015-04-09 10:28:13來源:未知 作者:天天日記
    請記住本站的網址:www.whkqy.com

    摩擦起電六年級日記

    4月8日 星期三 陰
      聽說,塑料摩擦會起電,能夠吸附細小的東西。真的是這樣嗎?我決定和媽媽一起做個試驗。
      我拿來一把塑料梳子,找來幾張廢紙,撕成5毫米大小的碎紙片。用梳子在頭上梳了幾下,然后把梳子靠近紙片,紙片果然被吸了起來。媽媽讓我再用力梳幾下試試,這次吸起來的紙片更多了,我驚奇地叫起來,這是為什么呢?
      于是,我打開電腦,上網查找相關資料。原來,塑料梳子在干燥頭發上梳幾下后,摩擦產生了靜電。靜電是由于兩種不同材質的物體接觸后,產生電荷的轉移和積累形成的。當梳子靠近碎紙片時,碎紙片由于靜電感應也帶了電,就會吸附在塑料梳子上。
      今后遇到問題,我一定要勤于動手,認真思考,找到答案。只有這樣,才會學到更多的知識。




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