空气对流实验是八年级上册第二章第一节“大气层”中的气体对流实验。原实验采用大烧杯、橡皮泥、线香等实验器材,装置如图1所示。然而,最后的实验效果不理想,烧杯内弥漫着烟,可视性较差,学生无法通过观察实验现象来描绘空气对流图,甚至有些学生认为是烟碰到 The air convection experiment is the convection experiment of the gas in the eighth chapter, the second chapter, the first chapter “atmosphere ”. The original experiment using a large beaker, plasticine, incense and other experimental equipment, device shown in Figure 1. However, the final experimental result was not satisfactory. The beaker was filled with smoke and the visibility was poor. Students could not describe the convection pattern of air by observing the experimental phenomena, and some students even thought it was smoke hit