Today, the teacher assigned a task to us: Do little test of science of a family. Return the home, I thought a little while, the decision does a test about buoyancy. Then, I prepared the data that the experiment uses: Canal of an a salt of a cup of clear water, one canister, ladle, agitate and an egg.
今天，老师给我们布置了一项作业：做一个家庭科学小实验。回到家，我思考了一会儿，决定做一个关于浮力的实验。于是，我准备了实验用的材料：一杯清水、一罐食盐、一个勺子、一根搅拌管和一个鸡蛋。
Before the experiment, I ask mother: “ old Mom, put the egg mix in clear water what is there to distinguish in brine? ”“ you finished I tell the experiment you again. ” mom sold intentionally to close child, it is to want to let myself think certainly.
实验前，我问妈妈：“老妈，把鸡蛋放入清水里和盐水里有什么区别吗？”“等你做完了实验我再告诉你。”妈妈故意卖了一个关子，一定是想让我自己思考。
The experiment began, I put the egg into water first in, the egg sank very quickly cup bottom, also moving, lie in benthic quietly like the baby, wait for me to take like a beautiful cobble again. I used ladle to scoop up the egg cautiously from inside water, egg of for fear that falls broke.
实验开始了，我先把鸡蛋放入水里，鸡蛋很快就沉到了杯底，在也不动了，像婴儿一样安静地躺在水底，又像一块漂亮的鹅卵石等我来取。我用勺子小心翼翼地把鸡蛋从水中捞了出来，生怕鸡蛋摔碎了。
Next, salt is joined in clear water of my go toing, provide mix with agitate, in the process of agitate, I still accelerated rate, can accelerate salt so dissolve, as salt dissolve, I discover the water in the cup gradually full marks / before doing not have so clear, the whirl with ceaseless below the action of my agitate water flows ……
然后，我往清水里加入食盐，用搅拌管搅拌，在搅拌的过程中，我还加快了速度，这样可以加快食盐的溶化，随着食盐的溶化，我发现杯子里的水渐渐的满分/没有之前那么清澈了，水在我搅拌的作用下不停的旋转流动……
After waiting for salt to be dissolved completely, I put the egg into water again in. At that time, after I discover the egg reachs a cup of end amazedly, beat a few times in water, very fast float come up. Be like a ping-pong to float on surface; Small like still fish breathes air in surface. “ is very magical! ” I jumped gladly ……
等食盐完全溶化后，我再次把鸡蛋放入水里。这时候，我惊奇地发现鸡蛋到达杯底后，在水里跳动了几下，很快的浮了上来。好像一个乒乓球漂浮在水面上；还像一只小鱼在水面呼吸空气。“好神奇呀！”我高兴地跳了起来……
Do you know “ now egg why can does float arrive surface? ” mom asks. You fasten “ old Mom keep others guessing, fast tell me! What reason be? Because salt was added in clear water,”“ is, the density of water can greaten, buoyancy also can increase, sink formerly so the egg in bottom of clear water cup, rise with respect to meeting float in brine. ” mom is laughing to explain.
“你现在知道鸡蛋为什么可以浮到水面了吧？”妈妈问。“老妈您就别卖关子了，快告诉我嘛！是什么原因呢？”“是因为在清水里加了盐，水的密度就会变大，浮力也会增加，所以原先沉在清水杯底的鸡蛋，在盐水中就会浮起来。”妈妈笑着解释道。
Pass this flotage little test, let me feel nowhere is not in scientific knowledge, want us only careful bier, think attentively, start work go doing, can discover a lot of scientific mystery. So, I should do scientific test more later, will abound oneself scientific knowledge.
通过这个浮力小实验，让我感觉到科学知识无处不在，只要我们仔细棺材，用心思考，动手去做，就会发现许多科学的奥秘。所以，我以后要多做科学实验，来丰富自己的科学知识。(文/巫欣彤)