作文库小学五年级内容页

水的张力作文800字

2022-07-10 00:01:03五年级225

“ bites bell. ” attends class the bell rang, mr. Guo went, there still are transparent paper cup and an a few watering cans in her hand. Paper cup and jug distain the ground to see us, child of “ small wind, you were finished! 2 bonze feel ” our a unit of length to be not worn brains, doubt of the bellyful in each heart, the heart thinks: Teacher what is this to should work? ” Mr. Guo appears detection our idea, but still do not tell us to want what to do, she laughs archly, say: “ classmates, you are guessed! ” in a moment, scamper was just as to open boiler in the classroom, classmates gabble ground comment rises. Some saying: “ Mr. Guo should be to should hold the contest that drink water, who to see be drunk more. ” some saying: “ is incorrect, should be to should do a test. ” returned some to develop the 6th sense adequately, say: “ is to bad thing wants to produce …… for certain

“叮铃铃。”上课铃响了,郭老师走了进来,她手里还拿着一些透明的纸杯和一个水壶。纸杯和水壶鄙视地看见我们,“小屁孩,你们完蛋了!”我们丈二和尚摸不着头脑,个个心里满腹狐疑,心想:老师这是要干什么呀?”郭老师似乎看穿了我们的心思,但依然不告诉我们要干什么,她狡猾地一笑,说:“同学们,你们猜一猜吧!”霎时,教室里犹如炸开了锅,同学们都七嘴八舌地议论起来。有的说:“郭老师应该是要举行喝水比赛,看谁喝得多。”又有的说:“不对,应该是要做一个实验。”还有的充分发挥了第六感,说:“肯定是有不好的事要发生……

At that time, teacher clap, let everybody stop. This ability announced the result: Original, today is to should do a test about water.

这时候,老师拍了拍手,让大家停下来。这才公布了答案:原来,今天是要做一个关于水的实验。

Mr. Guo paper cup each deal out we, after taking a glass, the teacher adds water in water cup again, see Mr. Guo pours water rapidly the glass only, blink kongfu, water overflowed a cup most go up upright. In a few minutes, mr. Guo comes to me before, my heart insecurity gets ” of “ phut phut to jump continuously, water of for fear that comes out from the excessive in the cup. But the miracle happened, water has overflowed a cup most on carry one big chunk, water comes out without excessive unexpectedly in those days. I am so open-eyed that I within an inch of cries, mr. Guo says then again: “ I send 5 coin every groups to you, you put it into water, see water drip. ” I am not with the composition like that: This affirmation must drip come out, water should have dripped immediately come out, it is OK to should add a hair only, be a coin what is more,the rather that! Went up to also show mysterious expression with the face of my a group Ma Xinyi. We two in putting coin water, but, the thing exceeded our imagination again. Water still comes out without excessive, , two …… go to the 4th when, water still wants the evidence that leakage comes to without a bit, my nervous now mood had become excitement, coin is put, but water still is installed calmingly,be in the cup. Put coin, mr. Guo lets us put clip again, at that time, I and group an apprehension that Ma Xinyi had done not have a bit, scattering big ground greatly, clip is very obedient also, a root sank in water; Spitting small hubble-bubble. Each is hanging excited smile on our face, it seems that everybody has bumped into …… without small bunny chaos

郭老师把纸杯一个个分给我们,拿到杯子以后,老师又在水杯里加水,只见郭老师飞快地将水倒入杯子,一眨眼功夫,水就漫到了杯子的最上端。几分钟后,郭老师就来到了我的面前,我的心紧张得“砰砰”直跳,生怕水从杯子里溢出来。可是奇迹发生了,水已经漫过杯子的最上端一大截,那时水居然没有溢出来。我惊讶得差点叫出来,郭老师又接着说:“我给你们每组发五颗硬币,你们把它放进水里,看看水有没有滴出来。”我不以作文为然:这肯定得滴出来,水都已经马上要滴出来,只要加一根头发就可以了,何况是一颗硬币呢!跟我一组的马昕怡的脸上也露出了不可思议的表情。我们俩一起将硬币放入水中,可是,事情又一次超出了我们的想象。水还是没有溢出来,一颗、两颗……到第四颗的时候,水还是没有丝毫要漏出来的迹象,现在我紧张的心情已经变成了兴奋,硬币放完了,可是水依然平静地装在杯子里。放完了硬币,郭老师又让我们放回形针,这时候,我和组员马昕怡已经没有了丝毫的顾虑,大把大把地撒着,回形针也很听话,一根根都沉到了水里;吐着小泡泡。我们脸上个个都挂着兴奋的笑容,似乎谁都没有小兔子乱撞过……

The experiment finished, can be us still very excited, this is, listen to “ to attack of ” only, we see the look to the place that sound gives out, it is Du Zhiyuan so piquant, fight with the floor, failed, trip. Just when we take pleasure in other's misfortune when, mr. Guo casts experimental principle to us: Original, water has pulling force. The tension of surface, this aeriform however the randy force surface that prop up crosses cup mouth and not excessive. The coin that puts more destroyed the pulling force of water, overflow ” of temple of “ golden hill with respect to meeting water. I look up the place that views Du Zhiyuan trip, if be thought of somewhat. Du Zhiyuan and ” of chaliced “ coin are same, once destroyed “ tension ” , meet “ failure ” . Everything has degree, going too far as bad as not going far enough!

实验做完了,可是我们依然很兴奋,这是,只听“扑”的一声,我们把目光都看向了声音发出的地方,原来是杜致远调皮,和地板打架,失败了,摔倒了。正当我们幸灾乐祸时,郭老师将实验原理抛向了我们:原来,水是有张力的。水面的张力,这股无形却有劲的力量支撑水面越过杯口而不溢。多放的硬币破坏了水的张力,就会水漫“金山寺”。我抬头看了看杜致远摔倒的地方,若有所思。杜致远和杯中的“硬币”一样,一旦破坏了“张力”,便会“失败”。凡事都有个度,过犹不及呀!(文/施丁文)

再来一篇
上一篇:善良的老师作文500字 下一篇:妈妈的婚纱照作文600字
猜你喜欢