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压强是初中物理力学中的重点难点之一。实际教学中,学生普遍可以较好地理解压强知识,并简单应用固体压强、液体压强、气体压强知识。但当压强问题的难度或复杂性增加时,学生就会感到有困难,解题时也容易出错。本文重点对三种压强问题及其压强综合性问题进行了探讨。
Pressure is one of the key difficulties in physics in junior high school. In the actual teaching, the students generally can understand the knowledge of pressure well, and simply apply the knowledge of solid pressure, liquid pressure and gas pressure. However, when the difficulty or complexity of the pressure problem increases, the student may feel difficult and may also make mistakes in solving the problem. This article focuses on three kinds of pressure problems and their comprehensive pressure problems were discussed.