生活明朗,万物可爱
不负每一份美好
扑捉一群小可爱
享受着玩中学的快乐
身心愉悦这才是
真正的童年时光♥️
👧:老师,我想再玩一次
“鱼跃龙门”!
这回我一定能吹的更远😚
那你们知道吗?
乒乓球既能吹的远👈👉,
也能让它分不👉👈
今日份的科学小实验
《吹不开的乒乓球》
实验材料
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实验步骤
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第一步:
将木棍一上一下摆正。
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第二步:
将乒乓球放置于木棍上。
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🤔疑问一:
为什么球会滚落?
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解决办法
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终于成功固定住啦!
第三步:
用吸管向中间空位吹气。
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🤔疑问二:
为什么乒乓球不动?
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解决办法
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把乒乓球放近一点。
再吹气,
乒乓球越来越近了,
终于贴在一起啦!✌
成功瞬间
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精彩比赛
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准备阶段-选手就位!
1号选手看上去很兴奋的样子,
早早地就开始热身,
2号选手冷眼看它秀肌肉
第一局
用吸管向乒乓球中间吹气,
1号选手发起进攻,
2号选手出手反击,
实力不相上下,打成平局!
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00:04
第二局
2号选手上场就来了个“下马威”
1号选手心有余而力不足,
很可惜被2号选手击败。
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最后一局
1号选手拼尽全力,
可惜他已精疲力尽,
双方僵持不下,
裁判判定打成平手。
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00:04
最终2号选手以1:0的成绩胜出!
恭喜他!
绘画时间
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课堂解惑
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为什么两个乒乓球吹不开呢?
来听老师讲讲🤫
科学原理:
气流越快压强越小,当吸管向两个乒乓球中间吹气时,乒乓球外面两侧的空气压力不变,但是乒乓球中间气流加快,所以乒乓球外侧空气会向乒乓球中间施加压力,从而能让乒乓球贴在一起。
当孩子遇见
科学🔍;
世界变得奇妙🌈
当科学成为
游戏🧚♂️;
成长变得有趣🤩