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    作文網,小學生作文,初中作文,高中作文,作文題材大全!

    二年級敘事作文200字 電風扇的風

    編輯:作文網 | 來源:二年級作文

    晚上,我在家里做作業。

    天氣非常熱,不知不覺我的頭上出現了細細的汗珠。這時,爸爸幫我打開了電風扇,真涼快呀!

    我問爸爸:“為什么電風扇一開,就這么涼快呢?難道風扇能吹出涼風?”爸爸解釋說:“其實電風扇并不能降低室內的溫度,吹出的也不是涼風。只是當電風扇轉動的時候,室內的空氣就會流動起來形成風,風能把我們身上的汗吹干,把人身上的熱量帶走,人就感到涼快了。”

    原來,電風扇的風還有這樣的科學道理,科學真是無處不在呀!讓我們趕快去發現吧!

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