“浮力”知识与我们的生活、生产紧密联系,也是力学中的重要内容,更是学生能力提升的关键点。综观近年各地中考测试题,该部分考查的题型遍布选择、填空、实验、计算等,涉及的题型多,所占的比例大,而且试题考查的综合性、开放性较强,突出知识的理解和方法的运用,所以同学们要对浮力深入理解、熟练运用。一、在探究中学会分析例题1小红将苹果放入烧杯并逐渐向烧杯中加水,看到如图1所示的情景: “Buoyancy ” knowledge and our life, production is closely linked to the mechanics is an important part, but also the key point of improving students’ abilities. In recent years, a comprehensive examination of the test questions in all parts of the exam questions around the choice of fill in the blank, experiments, calculations, etc., involving a variety of questions, the proportion of large, and comprehensive exam questions, open, strong knowledge of Understanding and method of use, so students should have a deep understanding of buoyancy, skilled use. First, in the study of middle school will analyze a sample of red 1 Put the apple into the beaker and gradually add water to the beaker, see the scene shown in Figure 1: