这是一道初中力学探究题——比较两种液体密度大小的多种判断方案。在初中物理力学知识中,“密度”占居重要地位:它能把质量、重力、摩擦力、压强、浮力、动能和重力势能等物理量紧密地联系起来,形成力学知识网络。在总复习阶段我引导学生,尝试从多角度、多方案地去探究比较两种液体密度的大小,教学实践证明,这道力学探究题,就像一篇 This is a junior high school mechanics inquiry - a comparison of two kinds of liquid density of a variety of judgments. In the junior middle school physics and mechanics knowledge, “density” occupies an important position: it can closely link the physical quantities such as mass, gravity, friction, pressure, buoyancy, kinetic energy and gravity potential to form a mechanics knowledge network. In the general review stage I guide the students to try to explore from multiple perspectives and more programs to compare the size of the two liquid density, teaching practice has proved that this road mechanics inquiry, like an article