第一篇:有趣的实验的周记
在生活中,可能一个细心的观察、一个不起眼的举动、甚至是一次偶然的发现都能使你多了解一些知识。而我,就通过了一次很有趣的实验,长了不少见识呢,下面,我就来说说我做的这个实验吧!
去年暑假,我在津津有味的看一本作文书,突然有一篇日记吸引了我,说茶水能变墨水。我半信半疑,茶水怎么会变成墨水呢?但是,书上的东西也不会骗人啊!于是,我就去询问爸爸,爸爸也不知道是真是假,随口对我说:“你自己去验证一下不就行了吗?”现在也只有这个办法啦,为了满足一下我强烈的好奇心,所以,我准备亲自实践实践!说干就干,我按照书上说的,先沏上一杯茶,等这个茶水变成土黄色的时候,再把锈铁针放进去。然后,再等上几个小时就行了。就这样,我满怀期待的等待着实验结果。
到了晚上,我凑到厨房的桌子上一看,“哇塞!真的变成墨色呢!”我情不自禁的发出惊叹。真是不可思议啊,我连忙跑到桌子那儿拿了一支毛笔,蘸了蘸写起字来。顿时,一个个黑字映入我的眼帘。真是神了,和墨水的效果简直一模一样嘛!可是,锈铁针放入茶水里怎么会有这么大的变化呢?想要弄清楚这个实验是为什么,只能去问问百度了啊!我查了资料才知道,原来,茶叶中含有一种叫单宁酸的物质,它遇到锈铁会起化学反应,因此,茶水就会变黑。
看吧,只有通过实验才能验证你的猜想,只有通过实验才能加深你的印象。多少成功的人是因为自己的好奇心和坚持不懈的精神得来了成功的喜悦啊,这种有趣的实验,不仅让我对神奇的世界增加了一份好奇,更从中得到了很多知识。
第二篇:有趣的家务的周记
我的童年有很多有趣的事,其中我最难忘的就是帮妈妈洗手机。下面就听我细细说来。
记得我5岁那年,妈妈要上班去,让我自已在家,走的时间告诉我:在家干点活,我听了喜笑颜开,眉飞色舞的说:没问题!妈妈走后,我就想做什么呢?我四处张望,突然,我看到一个黑黑的东西,对了!是手机。我的脑袋里出现了一个点子,咦!我可以帮妈妈洗手机呀!架起砧板切菜,说干就干!我拿上手机就进了厕所。
开始我先用盆子接了点水,再用先手液往手机上挤了点,再搓一搓,再把手机盖打开,把电池放入水中,用手搓来搓去,我费了九牛二虎之力,终于,电池被我搓的干干净净。该刷卡了,我把卡取下来,放入盆中,拿着刷子在卡上刷来刷去,手机洗完了,就放在桌子沾沾自喜。想等妈妈下班回来了怎么表扬我!
妈妈终于下班回来了,我给妈妈看的劳动成果!可妈妈生气了!还批评了我!说手机不可以洗的!结果手机真的报废啦!唉!现在想想我真的太傻了!但是还是忍不住哈哈大笑!!
第三篇:有趣的故事会周记
星期天上午,我和妈妈坐车到新华书店去参加芜湖故事妈妈团的故事妈妈讲故事活动。故事妈妈先讲了《好饿好饿的小蛇》这个回本故事,小朋友们听得津津有味。
讲完故事后,故事妈妈让小朋友们把自己想给小蛇吃的东西画出来,然后讲给大家听。小朋友们拿起画笔,画着自己想给小蛇分享的食物。我画的是:一只小蛇看见前面有一个苹果,一把香蕉,它就大口大口地吃起来。吃饱之后,它就往家里爬。爬着爬着,忽然看见家门口还有一串葡萄,它一口就把葡萄吞了下去。
讲完画作之后,故事妈妈又问了一个问题“为什么作者选的主角是小蛇而不是人或者其他动物呢?”小朋友们都开动脑筋,七嘴八舌地说起来。我当时想,作者会不会因为很多小朋友害怕蛇,就创作力这么可爱的小蛇,让小朋友们不再害怕蛇呢?后来故事妈妈揭开了谜底,原来啊作者选择蛇作为故事的主角是因为蛇这种动物能吞下比自己大很多倍的东西,它没有四肢,是软体动物,能够随意变形。所以作者创作了贪吃的小蛇,而选择其他的动物做主角就不能达到作者想要的效果啊。
我觉得故事会真有趣。不仅能够聆听优美的故事,还能开动脑筋获得智慧。以后,我还要来新华书店听故事妈妈讲故事。小朋友们,你来么?
第四篇:记一次有趣的小实验
记一次有趣的小实验
“叮铃铃”上课了,老师拿着一个小塑料袋进了教室,对我们说,今天,我们来做一个小实验,我们可高兴了。
老师先把袋子里的东西拿了出来,我们细细一看,没什么特别的呀,就是一张白纸,一瓶矿泉水,还有一个玻璃杯。老师先在杯子里倒了一半的水,问我们:“你们说我把杯子倒过来,水会泼下来吗?”这个问题太简单了,三岁儿童都会回答,当然了。这时老师又神神秘秘的说,那如果我把白纸放在杯口,压紧倒过来,那水还会泼下来吗?我们异口同声地说:“那当然了!”“是不是要试验一下才知道了”说完,老师便动了起来,吓得靠近讲台的同学连忙把书收下去。只见老师缓慢地将手挪开,我们仿佛已经见到了水洒满讲台的场面了,当老师的手完全挪开后,水惊奇的没有洒下来,纸好好地贴在杯口,这是怎么回事,我们百思不得其解,一直讨论着,可说来说去还是不知道为什么,没办法只好求助老师了,老师说:“当把杯子内盛满水,然后用纸把杯口盖严就意味着杯子里的空间都被水给占满了,空气都被排空了,这样纸片就只有一面有大气,大气压对纸片的压强大于对水对纸片的压强,所以水就不会洒下来了。”
这次实验不仅有趣,还让我明白了一个常识呢!
杯子内盛满水,用纸片把杯口盖严,就意味着杯子里的空间都被水占满了,空气都被排空了,这样纸片就只有一面有大气,它就会被强大的大气压封在杯口了。
大气压对纸片的压强大于水柱对于纸片的压强
第五篇:有趣的英语周记题目
Journal Topics
1.What would life be like if you had a clone?
2.You were recently elected President of the United States – What would you do with this new
power? What things would you change about our country?What would you keep the same?
3.If you life was turned into a major motion picture(movie)what would it be like?Who would the
main actors be and what parts would they play?What would be the genre?(suspense, comedy, romance, action)What would be the main conflict?
4.What would happen if animals could talk? What are some questions you would like to ask them?
What do you think they would say?
5.What would the world be like if children(ages 5-12)ruled the world?How would it be different
than it is now?
6.What do you think the world will be like in 2109?
7.How would you run your classroom if you were the teacher?How would it be different than the
classes you have now?How would it be the same?
8.If you could take three people on a trip to anywhere in the world, where would you go and who
would you take?What would your trip be like?What would you want to see?
9.If I was 25 years old, I would…
10.If you were given three wishes, but could only use them for things that didn’t directly benefit
you, what would you wish for?Why?
11.Write about someone important to you.12.Write about a time when you thought you were right and everyone else thought you were
wrong.13.What is your favorite childhood memory?
14.Write about an embarrassing moment.15.If you could make any three things happen, what would they be and how would they affect you
and those around you?
16.What would you consider to be your biggest mistake in life so far?
17.What is the strangest thing that has ever happened to you?
18.Do you believe in ghosts?Why or why not?Have you ever seen a ghost or know anyone who
has?
19.If you could have dinner with anyone from history, who would you choose?Where would you
eat?What questions would you ask them?What do you think their answers would be?
20.If you could rid the earth of one thing, what would it be and why?How would the world be
different without it?
21.If you could switch places with one famous person, who would it be and why?How would your
life change?
22.If you could go back in time and relive one day of your life, which day would you choose?Why?
23.Write a story about being kidnapped by aliens.24.Write a love letter to your celebrity crush.25.If you could turn any fictional character into a real life person, who would you choose?Why?
How would the world be different if that person was alive?