笔者在中考复习的过程中,发现初三学生在解各省市“中考试题集锦”涉及到有限量液体的浮力问题时,由于液体有限,学生通常受思维定势的束缚,往往对限定条件熟视无睹,极易掉入“陷阱”现举例剖析如下.“陷阱”一:认为物体浸入液体中溢水量等于浮力例一:某物体重为0.5牛,把它放放盛有水的烧杯中,溢出重为0.3牛的水,则它受到的浮力A.一定为0.3牛 B.可能为0.2牛C.一定为0.5牛 D.可能为0.4牛错解:有的同学认为溢出了0.3牛的水,物体浸入烧杯中排开的液体受到的重力即为0.3 In the process of reviewing the senior high school entrance examination, the author found that when the junior high school students were involved in the buoyancy problem of a limited amount of liquids in solving the problems in the provinces, cities, and cities, the students were often constrained by the limited mindset because of the limited liquid. Turns a blind eye and can easily fall into a “trap.” The following example is anatomized as follows.“Trap” One: think that the object is immersed in liquid. The amount of overflow is equal to buoyancy. Example 1: Something is 0.5 lbs., put it on water In the beaker, if it overflows 0.3 ounces of water, it will be buoyant A. It must be 0.3 lbs. B. It may be 0.2 lbs. C. It must be 0.5 lbs. D. It may be 0.4 lbs. False: Some students think that it is 0.3. The gravity of the bovine water, which is immersed in the beaker, is 0.3.