无论是单科物理还是理科综合中的物理,能量的转化和守恒是近些年高考物理科目命题的热点、重点、难点,它贯穿于高中物理学习的始末,是联系各部分知识的主线,守恒思想是物理学中极为重要的思想,是开启物理大门的金钥匙,纵观近几年高考,对它的考查呈如下特点:频率高、年年考;灵活性强、难度大、内容丰富;常以综合题形式出现,所占分量重;注重联系实际。 Regardless of the physics in single subject physics or science synthesis, the transformation and conservation of energy is the hot spot, key point, and difficulty of the propositions of physical subjects in college entrance examinations in recent years. It runs through the whole process of physics learning in high schools, and is the main line connecting all parts of knowledge. Thought is an extremely important idea in physics. It is the golden key to the opening of physical doors. Throughout the college entrance examination in recent years, its examination has the following characteristics: high frequency, annual examination; flexibility, difficulty, and rich content; Often appear in the form of a comprehensive question, which occupies a heavy weight; pay attention to contact with reality.