<h3><br></h3><p style="max-width: 100%; clear: both; min-height: 1em; letter-spacing: 0.544px; text-align: justify; white-space: normal; font-size: 16px; color: rgb(62, 62, 62); font-family: 微软雅黑; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;">小朋友及大朋友们，晚上好！又到了今天的【科学大发现】时间了，我们的口号是“小实验大科学”。现在，你们准备好和我一起探索神秘的科学世界了吗？让我们变身科学小侦探，开启今天的科学任务吧！</span></h3><p style="max-width: 100%; clear: both; min-height: 1em; letter-spacing: 0.544px; text-align: justify; white-space: normal; font-size: 16px; color: rgb(62, 62, 62); font-family: 微软雅黑; line-height: 1.75em; overflow-wrap: break-word !important;"><br style="max-width: 100%; overflow-wrap: break-word !important;"></h3><p style="max-width: 100%; clear: both; min-height: 1em; letter-spacing: 0.544px; text-align: justify; white-space: normal; font-size: 16px; color: rgb(62, 62, 62); font-family: 微软雅黑; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;"><br style="max-width: 100%; overflow-wrap: break-word !important;"></span></h3><p style="max-width: 100%; clear: both; min-height: 1em; letter-spacing: 0.544px; white-space: normal; font-size: 16px; color: rgb(62, 62, 62); font-family: 微软雅黑; line-height: 1.75em; text-align: center; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;"><span style="max-width: 100%; color: rgb(255, 255, 255); font-size: 16px; background-color: rgb(0, 0, 0); overflow-wrap: break-word !important;">领取任务卡</span></span></h3> <h3><br></h3><p style="max-width: 100%; clear: both; min-height: 1em; letter-spacing: 0.544px; text-align: justify; white-space: normal; font-size: 16px; color: rgb(62, 62, 62); font-family: 微软雅黑; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="max-width: 100%; color: rgb(0, 0, 0); overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;">【今日任务】</span></strong></span><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;">探索粉尘遇火爆炸等事故背后的原因</span><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;">。</span></h3><p style="max-width: 100%; clear: both; min-height: 1em; color: rgb(51, 51, 51); letter-spacing: 0.544px; text-align: justify; white-space: normal; font-family: 微软雅黑; line-height: 1.75em; overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;">【问题分析】</span></strong><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;"><span style="max-width: 100%; color: rgb(62, 62, 62); overflow-wrap: break-word !important;">当室内有煤气泄漏、或者矿井下充斥瓦斯、煤尘，车间里充满面粉、棉纱微粒时，一旦遇到明火或热源就会燃烧爆炸。今天我们通过实验来模拟并探寻其中的原因吧。</span></span></h3><p style="max-width: 100%; clear: both; min-height: 1em; letter-spacing: 0.544px; text-align: justify; white-space: normal; color: rgb(62, 62, 62); font-family: 微软雅黑; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="max-width: 100%; color: rgb(0, 0, 0); overflow-wrap: break-word !important;"><strong style="max-width: 100%; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;">【课程目标】</span></strong><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;"><span style="max-width: 100%; color: rgb(62, 62, 62); overflow-wrap: break-word !important;">培养发现、分析、解决问题的能力，建立科学理性的思维方法。</span></span></span></h3><p style="max-width: 100%; clear: both; min-height: 1em; letter-spacing: 0.544px; white-space: normal; font-size: 16px; color: rgb(62, 62, 62); font-family: 微软雅黑; line-height: 1.75em; text-align: center; overflow-wrap: break-word !important;"><span style="max-width: 100%; background-color: rgb(0, 0, 0); color: rgb(255, 255, 255); overflow-wrap: break-word !important;">实验所需材料</span><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;"><br style="max-width: 100%; overflow-wrap: break-word !important;"></span></h3><p style="max-width: 100%; clear: both; min-height: 1em; letter-spacing: 0.544px; white-space: normal; font-size: 16px; color: rgb(62, 62, 62); font-family: 微软雅黑; line-height: 1.75em; text-align: center; overflow-wrap: break-word !important;"><span style="font-size: 14px; letter-spacing: 0.544px;">蜡烛1支、点火器1个</span><br></h3> <p style="max-width: 100%; clear: both; min-height: 1em; letter-spacing: 0.544px; white-space: normal; font-size: 16px; color: rgb(62, 62, 62); font-family: 微软雅黑; line-height: 1.75em; text-align: center; overflow-wrap: break-word !important;"><span style="max-width: 100%; color: rgb(255, 255, 255); background-color: rgb(0, 0, 0); overflow-wrap: break-word !important;">实验操作步骤</span></h3><p style="max-width: 100%; clear: both; min-height: 1em; letter-spacing: 0.544px; text-align: justify; white-space: normal; font-size: 16px; color: rgb(62, 62, 62); font-family: 微软雅黑; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;"><br style="max-width: 100%; overflow-wrap: break-word !important;"></span></h3><p style="max-width: 100%; clear: both; min-height: 1em; letter-spacing: 0.544px; text-align: justify; white-space: normal; font-size: 16px; color: rgb(62, 62, 62); font-family: 微软雅黑; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 14px; overflow-wrap: break-word !important;">1.将蜡烛用点火器点燃，并让它燃烧一段时间</span></h3> <h3><br></h3><h3><span style="color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 14px; letter-spacing: 0.544px; text-align: justify; white-space: normal;">2.将蜡烛吹灭，蜡烛上方出现白烟。</span><br></h3> <h3><br></h3><h3><span style="color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 14px; letter-spacing: 0.544px; text-align: justify; white-space: normal;">3.点火枪不接触蜡烛，在白烟上打火。</span><br></h3> <h3><br></h3><p style="max-width: 100%; clear: both; min-height: 1em; letter-spacing: 0.544px; white-space: normal; font-size: 16px; color: rgb(62, 62, 62); font-family: 微软雅黑; line-height: 1.75em; text-align: center; overflow-wrap: break-word !important;"><span style="max-width: 100%; color: rgb(255, 255, 255); background-color: rgb(0, 0, 0); overflow-wrap: break-word !important;">现象及原理分析</span></h3><p style="max-width: 100%; clear: both; min-height: 1em; letter-spacing: 0.544px; text-align: justify; white-space: normal; font-size: 16px; color: rgb(62, 62, 62); font-family: 微软雅黑; line-height: 1.75em; overflow-wrap: break-word !important;"><br style="max-width: 100%; overflow-wrap: break-word !important;"></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: 0.544px; text-align: justify; white-space: normal; font-size: 16px; color: rgba(88, 88, 91, 0.933); overflow-wrap: break-word !important;"><span style="max-width: 100%; font-family: 微软雅黑; font-size: 14px; color: rgb(62, 62, 62); overflow-wrap: break-word !important;">通过实验我们发现，点火枪的火苗顺着白烟下降到蜡烛芯，蜡烛重新被点燃。</span></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: 0.544px; text-align: justify; white-space: normal; font-size: 16px; color: rgba(88, 88, 91, 0.933); overflow-wrap: break-word !important;"><span style="font-size: 14px; color: rgb(62, 62, 62); font-family: 微软雅黑; letter-spacing: 0.544px;">蜡烛的主要成分是石蜡，石蜡在高温条件下会产生石蜡蒸汽。当蜡烛被熄灭后，石蜡蒸汽并不会立即消失，而是继续以冒烟的形式散发。在仍然具有一定浓度的时候，石蜡蒸汽遇上明火就会燃烧，并像导火索一样再度点燃熄灭的蜡烛。而煤气泄漏，粉尘、煤尘、棉纱微粒达到一定的浓度时，遇火燃烧爆炸，其道理和这个实验是相通的。这也提醒我们，在充满粉尘、棉纱微粒或其他可燃气体的密闭空间内，需特别杜绝明火，避免发生爆炸。</span><br></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: 0.544px; white-space: normal; font-size: 16px; color: rgba(88, 88, 91, 0.933); text-align: center; overflow-wrap: break-word !important;"><span style="max-width: 100%; color: rgb(255, 255, 255); font-family: 微软雅黑; background-color: rgb(0, 0, 0); overflow-wrap: break-word !important;">实验注意事项</span></h3><p style="max-width: 100%; clear: both; min-height: 1em; letter-spacing: 0.544px; text-align: justify; white-space: normal; font-size: 16px; color: rgb(62, 62, 62); font-family: 微软雅黑; line-height: 1.75em; overflow-wrap: break-word !important;"><span style="font-size: 14px; letter-spacing: 0.544px;">蜡烛熄灭后需迅速在白烟地方打火。实验中特别注意用火安全。实验过程需大人全程陪伴，不能让孩子单独操作，确保安全。</span><br></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: 0.544px; text-align: justify; white-space: normal; font-size: 16px; color: rgba(88, 88, 91, 0.933); overflow-wrap: break-word !important;"><span style="max-width: 100%; font-size: 12px; color: rgb(136, 136, 136); overflow-wrap: break-word !important;"><span style="max-width: 100%; font-family: 微软雅黑; overflow-wrap: break-word !important;">免责申明：科学实验含一定的操作风险，请家长陪同孩子严格按照实验步骤操作并仔细留意本实验注意事项，实验过程中发生的任何安全事故，与育苗教育公众号无关。</span></span></h3> <h3 style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei"; color: rgb(25, 25, 25); text-align: justify; white-space: normal; font-size: 0.36rem !important; line-height: 1.6em !important;"><span style="-webkit-tap-highlight-color: transparent; font-size: 20px; text-align: center;"><span style="-webkit-tap-highlight-color: transparent;"> 北京红缨连锁</span></span></h3><h3 style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei"; color: rgb(25, 25, 25); text-align: justify; white-space: normal; font-size: 0.36rem !important; line-height: 1.6em !important;"><span style="-webkit-tap-highlight-color: transparent; font-size: 20px; text-align: center;"><span style="-webkit-tap-highlight-color: transparent;"><br style="-webkit-tap-highlight-color: transparent;"></span></span><span style="-webkit-tap-highlight-color: transparent; font-size: 20px; text-align: center;"><span style="-webkit-tap-highlight-color: transparent;"> 陵城区幸福春天红缨幼儿园<br style="-webkit-tap-highlight-color: transparent;"></span></span><span style="-webkit-tap-highlight-color: transparent; font-size: 20px; text-align: center;"><span style="-webkit-tap-highlight-color: transparent;"> </span></span></h3><h3 style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei"; color: rgb(25, 25, 25); text-align: justify; white-space: normal; font-size: 0.36rem !important; line-height: 1.6em !important;"><span style="-webkit-tap-highlight-color: transparent; font-size: 20px; text-align: center;"><span style="-webkit-tap-highlight-color: transparent;"> 育苗幼儿园</span></span></h3><h3 style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei"; color: rgb(25, 25, 25); text-align: justify; white-space: normal; font-size: 0.36rem !important; line-height: 1.6em !important;"><span style="-webkit-tap-highlight-color: transparent; font-size: 20px; text-align: center;"><span style="-webkit-tap-highlight-color: transparent;"><br style="-webkit-tap-highlight-color: transparent;"></span></span><span style="-webkit-tap-highlight-color: transparent; font-size: 20px; text-align: center;"><span style="-webkit-tap-highlight-color: transparent;"> 专注幼儿创造力培养</span></span></h3><h3 style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei"; color: rgb(25, 25, 25); text-align: justify; white-space: normal; font-size: 0.36rem !important; line-height: 1.6em !important;"><span style="-webkit-tap-highlight-color: transparent; font-size: 20px; text-align: center;"><span style="-webkit-tap-highlight-color: transparent;"><br style="-webkit-tap-highlight-color: transparent;"></span></span><span style="-webkit-tap-highlight-color: transparent; font-size: 20px; text-align: center;"><span style="-webkit-tap-highlight-color: transparent;"> 成长热线：18253472808</span></span></h3> <p style="-webkit-tap-highlight-color: transparent; letter-spacing: 0.3px; font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei"; font-size: 18px; color: rgb(25, 25, 25); text-align: justify; white-space: normal; 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