科学小实验的论文范文

1、写人的， When I sat at the desk， trying to write the essay， I found it hard to set pen to Staring at the topic I deliberately chose for myself "my mother"， I felt the memory of 20 years with my mother suddenly turned into a haze， blurring my eyes to discern the past， with nothing towering， nothing flaring， nothing impressive or special enough as a The haze gradually cleared away， revealing the image of an amicable I recalled a line from the famous movie "Sleepless in Seattle" The radio column hostess asked Sam， "What's so special about your wife？" He answered， "That's millions of small " Right，trivial and commonplace， like obscure beans， yet woven into the most spectacular necklace by the power of My mother is ordinary， but in my eyes she is My mother gave birth to me with exceptionally difficult Father received an emergency notice and was faced with a choice between the adult and the Of course，the So my coming into this world was an unexpected fortune at the price of Mother's painful Thus my 20 years began like this my mother exerted every effort to give me love， but I returned her with a deep scar that was to stay with her all through my My mother is a senior high school English Under standably， she wanted her daughter to pick up English early to give her an edge to later study， which I did not understand at the age of I was so obsessed with fun and games that I hated to stay peacefully with all those strange phonetic symbols and odd I wondered what pleasure Mother seemed to have found in teaching me A，B， C Wasn't teaching at school tire some enough for her？ I went on strike， refusing to spell a single word no matter how tender or severe Mother tried to be with For the first time in my life， Mother beat me， imprinting on my The physical pain was gone long， long But I have finally come to understand how it pained my mother to beat me for my obstinacy and disobedience， and I ache at her Mother never gave up evoking in me an interest in She placed the most emphasis on my education and took the most pleasure in my gradual formation of self-discipline in preparing myself for future Thanks to her effort and influence， I have been doing well， not only in English， but also in my positive attitudes and conviction towards 啤酒主义者 回答采纳率:6% 2008-10-14 22:32 A DreamMary: I’m now in the I can’t believe it! It’s so beautiful! What a colorful fish! It’s so lovely! Little fish, don’t go away! Oh, here comes a blue Wow, it’s so big! It’s bigger than my Oh no! There is a shark! Help! Help!Helen: What’s the matter, Mary?Mary: I saw a Its teeth are so big!Helen: Oh, it must be a Mary: …Yes, it’s a 赫锢蔽寡霓 回答采纳率:0% 2008-10-18 03:21

吗你呢女孩非常飞过海金华家门口看金华不能个 一天骨化风成就回复的人更好的道德的要大得多的长途费用飞天关系的人通常官方的人痛风vsrtfgby 让他想到

星期天早上，我打开冰箱拿鸡蛋，准备煎一个荷包蛋。我猛地一拉，发现横卧的几只鸡蛋经不住猛烈的摇晃，流出了鲜艳的蛋黄和透明的蛋液。而竖卧的鸡蛋却完好无损。这是为什么呢？我跑去问正在看报纸的爸爸，爸爸说：“你自己做个实验就明白了。是这样做的……”我为了探个究竟，照爸爸说的做了一个小实验：我拿了一大团橡皮泥，分成四小团。上面竖直放上四只鸡蛋和一块木板，再放上《新华字典》和《小学生作文》两本书。让我惊讶的是，结果鸡蛋毫发未损！我想如果鸡蛋是横放又是什么结果呢？动脑不如动手，我就在橡皮泥上横放了四只鸡蛋。哎！让我没想到的是：刚放上一本《新华字典》，鸡蛋就四分五裂了！是不是这几只鸡蛋的壳刚好是薄的呢？不如换别的蛋试试看！但结果还是一样。我再想：一边放竖的蛋，一边放横的蛋，在横放的鸡蛋下垫点橡皮泥，让这两只鸡蛋一样高，结果又是怎么样呢？我又做了个小实验，结果放上一只铅笔盒，原封不动，又放上一只瓷盘，横放的鸡蛋“啪”地一声就碎了。这是为什么呢？我仔细思考：这蛋是不是都是两端壳硬，中间壳软呢？我这想法是对还是错呢？如果是对的，为什么是两端壳硬、中间壳软呢……我一下子想出了好多问题。后来，我翻翻科学书，查了查资料，又问了问老师，得出了一个结论：我的想法是错的。正确的答案应该是：把鸡蛋横放，一压就破了，如果把它竖起来，就不易破，这说明同样的材料的强度大小，决定于形状的不同。这就像拱桥和平桥，两者所能承受的重量就不同，拱桥能承受更大的重量。 经过做这个实验，我养成了遇见问题就要仔细思考，争取弄懂的好习惯。

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