<h3><font color="#010101">小朋友们都知道，花儿绽放的时间都是极其短暂的，也是最难捕捉的美妙的瞬间。</font></h3> <div class="mp-article-texts mp-content text-bottom-img-gauge" style="margin-right: 0.3rem; margin-left: 0.3rem; padding-top: 0.06rem; padding-bottom: 0.03rem; -webkit-tap-highlight-color: transparent; overflow: hidden; bottom: -0.1rem; position: relative; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei"; font-size: 6px; white-space: normal; color: rgb(25, 25, 25);"><div class="mp-article-texts-word mp-article-texts-newword" style="-webkit-tap-highlight-color: transparent; font-size: 0.36rem; line-height: 1.6em; word-break: normal; color: inherit; text-align: justify; hyphens: auto; overflow: hidden;"><p style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: inherit; font-size: 0.36rem !important; line-height: 1.6em !important;"><font style="-webkit-tap-highlight-color: transparent;">那么有没有办法可以将花瓣绽放的时刻展现出来呢?</font></h3><h3 style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: inherit; font-size: 0.36rem !important; line-height: 1.6em !important;"><font style="-webkit-tap-highlight-color: transparent;"><br style="-webkit-tap-highlight-color: transparent;"></font></h3><p style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: inherit; font-size: 0.36rem !important; line-height: 1.6em !important;"><font style="-webkit-tap-highlight-color: transparent;">答案是肯定的。通过下面的实验，不仅可以控制开花的时间，还可以让“花朵”在水中绽放。小朋友们想一下，这是什么原理呢？</font></h3><h3 style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: inherit; font-size: 0.36rem !important; line-height: 1.6em !important;"><font style="-webkit-tap-highlight-color: transparent;"><br style="-webkit-tap-highlight-color: transparent;"></font></h3><p style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: inherit; font-size: 0.36rem !important; line-height: 1.6em !important;"><font style="-webkit-tap-highlight-color: transparent;">下面请小朋友们在家里准备一张纸，一盆清水，按照以下步骤，就能在家里欣赏“水中开花”的美妙时刻。</font></h3></div></div><div class="mp-article-images" style="margin-right: auto; 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background-repeat: no-repeat; background-position: 50% center; background-size: contain; text-align: center; z-index: -1; opacity: 0;"><br></h3></div></div></div> <h3>第一步:在白纸上画一个八角形图案。</h3> <h3>第二步:在八角形的每一个边上画出一个三角形。</h3> <h3>第三步:将花瓣涂上自己喜欢的颜色。</h3> <h3>第四步:将纸花沿轮廓剪下，并且将花瓣折叠。</h3> <h3>第五步:最后将折叠好的纸花放入事先准备的清水里，纸花在水中就会绽放成绚烂的花朵啦！</h3> <h3>好啦，纸花水中开的小实验我们就做完啦，小朋友们还可以根据自己喜欢的图案和色彩制作各种各样的纸花。那么，小朋友知道纸花水中开是什么原理么？</h3><h3>原来，这个科学实验叫做“毛细现象”原理。是因为纸是由纤维制成的，纤维之间的缝隙很小，就形成了无数个非常细小的毛细管。当纸和水接触后，水会通过毛细现象在很短时间内浸润到纸张的缝隙中，改变纸张的张力和形状，纸花就“盛开”了。</h3><h3>同时花盛开也能体现物理学中的分子运动观点，水分子运动到纸分子中间去，纸会发生膨胀，膨胀产生的力把花瓣撑开了。<br></h3><h3><br></h3><h3><br></h3>