一、制作浮沉子(一)制作材料矿泉水瓶一个,塑料小药瓶一个(眼药水或藿香正气水瓶),保险丝一小段。(二)制作方法1.把小药瓶口剪开,挤出药液,在开口处缠上一段保险丝(用以改变它的重心使它能永远开口向下竖着)。2.让小瓶里吸进些水,使之能刚好浮在水面。3.调好水后小心地把小瓶放 First, the production of floating sinks (a) making a mineral water bottle, a small plastic bottle (eye drops or Huoxiangzhengqi water bottle), a short fuse. (B) the production method 1. The small bottle mouth cut, squeeze out the liquid, wrapped in the opening section of the fuse (to change its center of gravity so that it can always open vertically downward). 2. Let the vial inhale some water, so that it can just float in the water. 3. Carefully put the vial after adjusting the water