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一、课程标准中对本章的要求1.通过实例了解能量及其存在的不同形式。能简单描述各种各样的能量与我们生活的关系。2.能用实例说明物体的动能和势能以及它们的转化。能用实例说明机械能与其他形式的能的转化。3.结合实例认识功的概念,知道做功的过程就是能量转化或转移的过程。4.知道机械功的概念和功率的概念。能用生活、生产中的实例解释机械功的含义。
First, the requirements of this chapter in the curriculum standards 1. Through examples to understand the different forms of energy and its existence. Can simply describe the relationship between various kinds of energy and our lives. 2. Can use examples to illustrate the kinetic and potential energy of objects and their transformation. Examples can be used to illustrate the conversion of mechanical energy to other forms of energy. 3. Understand the concept of work in combination with examples, knowing that the process of doing work is the process of energy conversion or transfer. 4. Know the concept of mechanical work and the concept of power. The meaning of mechanical work can be explained by examples in life and production.