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高中物理中的“能量守恒”问题在高考中占的比重非常大,同样也是学生们理解的一个难点。这类题型可以在很多的知识点上停靠,这就需要学生进行综合分析、步步为营,进行归纳整合。“能量守恒”问题在力学、电学、光学里面都有所涉及。在力学里面结合能量与功的转化,以机械能守恒为基础,进而解决力学中“能量守恒”的问题。在电学中,带点粒子在电场中做的功与电势能之间的转化,反应势能与其他形式能量之间的守恒与转化。光学守恒中,是以光电效应为理论基础,学习时比较抽象,但是理论基础还是能量守恒定律。
High school physics “energy conservation ” problem in the college entrance examination accounted for a very large proportion, but also a difficulty students understand. Such questions can stop at a lot of knowledge points, which requires students to conduct a comprehensive analysis, at every step, for induction and integration. The problem of “energy conservation” is covered in mechanics, electricity and optics. In mechanics, the transformation of energy and work is combined with the conservation of mechanical energy to solve the problem of “energy conservation” in mechanics. In electricity, the transformation of the work done by the particle with electric field in the electric field and the potential energy, the conservation and transformation of the reaction potential and other forms of energy. Optical conservation, based on the photoelectric effect as the theoretical basis, learning more abstract, but the theory is still the law of conservation of energy.