Physics and chemistry are two very special subjects in junior high school, second only to the number of languages in terms of score, higher than the four subjects of history, political geography and biology, but in terms of difficulty, they have become the subjects that are most likely to get high scores for middle school students.
In junior high school, it is difficult to learn Chinese without literacy, it is difficult to learn mathematics without thinking ability, it is difficult to learn English without commitment, and not many students find it difficult to learn physics and chemistry well.
However, in the past, physical chemistry was definitely not so difficult, but it was a subject that was comparable to the difficulty of mathematics and English, and could play a role in distinguishing the stream.
From the point of knowledge, junior high school physics sound, light, heat and electricity should have plates, but each plate stays in a very simple concept, and does not go deep into the real scientific thinking.
Make a simple comparison with the physics of our post-80s, other sound phenomena are combined with motion to investigate, the simplest natural phenomenon cognition of the current sound phenomenon investigation, the previous thermal phenomenon, need to investigate the calculation of endothermic and exothermic heat, now it is only the concept of three-state change, the biggest difficulty is the judgment of endothermic and exothermic, the previous magnetic field is a difficult point, and now it is almost not an important test point.
Of course, the most obvious reduction in difficulty is mechanics, not examining sports is the biggest difficulty in junior high school mechanics weakening, and this happens to be the core of the first year of high school, there is an obvious disconnect in difficulty, other pulleys, levers, buoyancy and pressure, the exam is not easy to learn, but it is significantly weakened in difficulty and weight, many students with insufficient scientific thinking, physics in the second semester of junior high school has dropped significantly, but they can get high scores in the high school entrance examination.
The universal high score of physics in the high school entrance examination stems from the fact that there are no difficult points to examine, and these difficulties are an important connection in high school, making physics one of the most abundant subjects for pseudo-scholars.