一、让学生亲手实验对浸在液体里的物体所受浮力大小的问题,由于学生头脑中受错误观点的影响,被表面现象所迷惑,所以有人认为轻的物体比重的物体受到的浮力大;也有人认为物体浸人液体越深受到的浮力越大等等。为了排除学生头脑中非物理观念而得到真知,让学生亲自做如下实验,很能解决问题。实验器材:弹簧秤、体积相同的铁块和铝块各一个,玻璃杯2个,清水和盐水适量。 First, allow students to personally experiment with the problem of the size of the buoyancy of objects immersed in liquid. Due to the influence of wrong viewpoints in students’ minds, they are confused by surface phenomena. Therefore, some people think that objects with a light weight have a large buoyancy; Some people think that the deeper the immersed liquid is, the greater the buoyancy is. In order to rule out the non-physical concepts in the students’ minds and get them to know the truth, let the students do the following experiments in person to solve the problem. Experimental equipment: spring scales, one iron and one aluminum block of the same size, two glasses, and appropriate amounts of clean water and salt water.