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土豆浮起来了作文500字

2022-10-14 04:38:11三年级229

"Wow! Tomato patch actually float rose! " I am squeezed into the crowd, the classmate that sees me individually dumbfounded, is this how? Original, they are being done " potato float rises " experiment.

“哇!土豆竟然浮起来了!”我挤进人群,看见我的同学各个目瞪口呆,这是怎么啦?原来,他们在做“土豆浮起来”的实验。

Potato gentleman embark upon a political venture, the potato of each idiotic, how to begin practice to rise " small meritorious service " came? Let our wait and see what happens. The teacher sent the potato of round billow to us first, still sent what whiteness is like snow to feed a composition salt, pour clear and clean tap water into the n cup of smooth level off, potato gentleman plunges in water, one fierce child plunge into go down, play rose to break up with bottle. In a few minutes, it has sunk commonly like reef benthic.

土豆先生粉墨登场,一个个呆头呆脑的土豆,怎么开始练起“轻功”来了?让我们拭目以待。老师先给我们发了圆滚滚的土豆,还发了洁白如雪的食盐,将清澈洁净的自来水倒入光滑平整的敞口杯中,土豆先生跳入水中,一个猛子扎下去,玩起了翻跟斗。几分钟后,它已经像礁石一般沉到水底。

"Put one spoon salt into water please. " teacher say. At this moment, the salt that glittering and translucent get rid of appears is dissolved slowly. The teacher says again: "Observe potato is moved again? " our pop eye, ground of fix eyes on is staring at potato, potato absolutely still, we are very anxious, in the heart skip urgently like small bunny will jump, but potato is firm however,sit father-in-law.

“请把一勺食盐放入水中。”老师说道。这时,晶莹剔透的食盐慢慢溶化。老师又说:“再观察土豆有没有动呢?”我们瞪大眼睛,目不转睛地盯着土豆,土豆纹丝不动,我们很焦急,心里急得像小兔子蹦来跳去,可是土豆却稳坐泰山。

The teacher says: "Can put one spoon salt again, observe what change potato has again? " after one spoon salt enters water, potato is groggy, learn the child that walk like. Suddenly, we see potato left cup heart, but still fall finally, at the moment, our doubt sound is incessant Yu Er. The teacher says again: "Irrespective, put one spoon salt again. " after another spoon salt enters water, general like kite surplus goes to potato surface, we are dumbfounded, dare not believe the fact before, we are touched with the hand, not heavy. Reoccupy chopstick jab one jab, not heavy still. We press potato to the end of the cup again, tomato patch slowly float rise, be too magical really!

老师说:“可以再放一勺食盐,再观察土豆有什么变化?”一勺食盐入水后,土豆摇摇晃晃,就像一个学走路的孩子。忽然,我们看到土豆离开了杯底,但最终还是落下了,此时此刻,我们的质疑声不绝于耳。老师又说:“没关系,再放一勺盐。”又一勺食盐入水后,土豆像风筝一般浮到水面,我们目瞪口呆,不敢相信眼前的事实,我们用手碰一碰,不沉。再用筷子戳一戳,还不沉。我们又把土豆按到杯底,土豆又慢慢地浮了起来,真是太神奇了!

Original, salt can change the density of water, let potato float rise. Absolutely cannot think of, small salt still has big effect!

原来,食盐可以改变水的密度,让土豆浮起来。万万没想到,小食盐还有大作用呢!

The life everywhere all scientific, let us be explored together!

生活处处皆科学,让我们一起来探索吧!

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