<p style="max-width: 100%; clear: both; min-height: 1em; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 1px; text-align: justify; white-space: normal; background-color: rgb(243, 226, 211); color: rgb(105, 62, 51); font-size: 15px; overflow-wrap: break-word !important;"> 小朋友們在生活中一定觀察到過，一般來說，紙片不小心落在水里（提醒大家，不能亂扔垃圾哦），即使整張紙都濕了，也不會輕易沉下去。可如果我們往水里加上一點(diǎn)其他的物質(zhì)呢？紙片是會繼續(xù)漂在水面上？還是會漸漸“石沉大?！?？</h3><p style="max-width: 100%; clear: both; min-height: 1em; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 1px; text-align: justify; white-space: normal; background-color: rgb(243, 226, 211); font-size: 15px; overflow-wrap: break-word !important;"><font color="#010101"> 科學(xué)源于對生活的觀察和思考，今天的實(shí)驗(yàn)因?yàn)椤八钡牟煌?，會有意想不到的結(jié)果哦~</font></h3><p style="max-width: 100%; clear: both; min-height: 1em; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 1px; text-align: justify; white-space: normal; background-color: rgb(243, 226, 211); font-size: 15px; overflow-wrap: break-word !important;"><font color="#010101"><strong style="max-width: 100%; overflow-wrap: break-word !important;">實(shí)驗(yàn)材料</strong>：色素（彩筆色即可）、2個玻璃杯、卡片、冷水、熱水。</font></h3> <h3><font color="#010101"><p style="font-size: 15px; max-width: 100%; clear: both; min-height: 1em; color: rgb(105, 62, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 1px; text-align: justify; white-space: normal; background-color: rgb(243, 226, 211); overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;">實(shí)驗(yàn)原理：</strong></h3><p style="font-size: 15px; max-width: 100%; clear: both; min-height: 1em; color: rgb(105, 62, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 1px; text-align: justify; white-space: normal; background-color: rgb(243, 226, 211); overflow-wrap: break-word !important;"> 小朋友們，你們知道為什么冷熱水不混合嗎？</h3><p style="font-size: 15px; max-width: 100%; clear: both; min-height: 1em; color: rgb(105, 62, 51); font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; letter-spacing: 1px; text-align: justify; white-space: normal; background-color: rgb(243, 226, 211); overflow-wrap: break-word !important;"> 原來，水是由無數(shù)的水分子組成，這些小小的水分子是在不停運(yùn)動的，熱水的分子運(yùn)動要比冷水更加劇烈，所以相對密度就會低于冷水，因?yàn)槊芏炔灰粯拥脑?，熱水就會浮在冷水上面，形成冷熱水不混合的效果。今天的?shí)驗(yàn)小課堂，又學(xué)到了新的知識，一起和爸爸媽媽實(shí)驗(yàn)一下吧。</h3></font></h3>