硬币滴水实验

1、硬币滴水实验-实验作文500字

今天，任老师带我们做了一个有趣的实验——硬币滴水实验。

Today, Teacher Ren took us to do an interesting experiment -coin dripping experiment.

首先，准备一支装满水的滴管和一枚硬币。我拿起滴管往硬币上滴上一滴，水滴小小的，如同汪洋中的一座孤岛，渺小又孤独。我接着往第一滴小水珠上滴下第二滴，水面立刻开始扩展，凸起。水滴一滴滴落在硬币上，硬币表面很快就被覆盖，如同一枚透明棋子扣在硬币上，光滑圆润，泛着白光。慢慢地，四十几滴下去了，近看会发现，水滴直径已经超过硬币直径，可它还是牢牢锁在硬币表面，没有崩盘。我紧张得要命，不小心碰到了桌子。原以为水珠会受不住桌子晃动而泄下来，没想到它竟如此有定力，像一个水晶果冻左右晃了晃，底盘却纹丝不动。我平复了下忐忑的心情再次拿起滴管往硬币上滴水。眼看五十滴了，每一滴水的加入都使得水珠不断壮大，却丝毫没有要流出来的表现，就好像一群士兵坚守阵地。六十多滴了，现在水珠就像发酵的馒头一样胖乎乎的。从上往下看，硬币上的花纹似乎也被放大了。我怀着期待，希望它凝聚更多水滴，但却紧张又害怕，生怕再来一滴，我的水珠就崩盘了。我小心翼翼地挤压滴管，轻轻让水滴落下。我数着七十三、七十四、七十……“啵”！水像熔岩一般铺流开来，但硬币上还残留着足以覆盖的水珠。我满足地呼出了一口气。

First, prepare a drop of water and a coin. I picked up the dropper and dropped a drop on the coin. The droplets were small, like a island in the ocean, small and lonely. I then dropped the second drop on the first drop of water, and the water surface began to expand immediately. Drops drop on the coin, and the coin surface was quickly covered. Like a transparent chess piece, it was buckled on the coin, smooth and round, and white light. Slowly, more than forty drops went down. When you look close, you will find that the diameter of the water drops has exceeded the diameter of the coin, but it is still locking on the coin surface firmly without collapse. I was so nervous that I accidentally touched the table. I thought that the water droplets couldn't stand the shaking of the table and leaked. I didn't expect it to be so fixed. I calmed down my mood and picked up the dropper again and dripped on the coin. Seeing fifty drops, the addition of every drop of water made the water droplets grow, but there was no performance to flow, just like a group of soldiers insisted on the position. More than sixty drops, now the water droplets are as fat as fermented steamed buns. From top to bottom, the pattern on the coin seems to be amplified. With expectations, I hope it will condense more water drops, but I am nervous and scared. I am afraid that a drop of drops will collapse. I carefully squeezed the dropper and gently dropped the water droplets. I count seventy -three, seventy -four, and seventy ... "啵"! Water is like lava, but the coins are still full of water droplets. I exhaled with satisfaction.

为什么一枚小小的硬币可以聚这么多水滴呢？其实这就是表面张力在作用。神奇的科学让我大开眼界。

Why can a small coin gather so many droplets?In fact, this is the surface tension.The magical science made me eye -opening.