中学物理二三事——浅谈温度、热量及浮力

Middle school physics two or three things— talk about temperature, heat and buoyancy

摘要: 本文谈及中学《物理》的二三事，那就说说初中（八、九年级）《物理》里“温度、热力学温度、分子热运动、热量、摩擦、液体压强及浮力”吧。作者偿试从概念入手、并结合当今科技成果对具体事物逐一分析，从而使物理概念反映到具体客观事物当中。由于理论认知需要随着科学实践的进步而不断更新和完善，所以今天的成果只能是或局限于某个阶段的总结。本文虽然是简要论述，但对初涉物理的学生有著重要的启迪作用。

Abstract: This article talks about middle school physical two or three things, then tell me something about the junior high school (grade8, 9) in the physical temperature, the temperature of thermodynamics, molecular thermal motion, heat, friction, fluid pressure and buoyancy. Author try, from the perspective of the concept, combined with today's scientific and technological achievements analysis on specific things one by one, so that the physical concept reflected in the specific objective things. Due to the theory of cognitive needs with the progress of scientific practice and continuously update and perfect, so today's achievement is only, or limited to a certain stage of the summary. Although is briefly discussed, but the new student of physics has the important enlightenment.