How to summarize physics and talk about the connection of knowledge points in each unit

I have the relevant information, how can I give it to you?

For the physics learning in junior high school, we must learn to summarize. Because physics contains a lot of knowledge points. First of all, you need to understand the main content of the knowledge points in each chapter, so that you can have a general understanding of what you have learned, and you will have a clearer idea of physics in your brain.

Chapter 13 of Physics summarizes the internal energy of molecular thermal motion, which includes the composition of matter, molecular thermal motion, and intermolecular forces. In molecular thermal motion, we need to understand the concept of thermal motion, diffusion phenomena and their physical significance, as well as the influencing factors of molecular thermal motion. Chapter 14 is the utilization of internal energy, and this one focuses on the efficiency of heat engines.

There is also the energy conversion and conservation of heat engines. And pointed out that there is no such thing as a perpetual motion machine.

Chapter 15 Currents and Circuits introduces positive and negative charges as well as atoms and their structures. It also introduces the measurement of current and circuit series and parallel currents, as well as the law of current in series and parallel circuits. Chapter 16 introduces the concepts of voltage and resistance, their units, measuring instruments, influencing factors, etc.

Chapter 17 Ohm's Law focuses on the relationship between current and voltage and resistance, as well as the measurement of resistance and the application of Ohm's law. Chapter 18 introduces the calculation methods of electrical power, electrical energy and electrical work, and the calculation methods of electrical power. They also learned about measuring the electrical power of small light bulbs and the application of Joule's law.

In Chapter 19, we learned about the composition of domestic electricity, household circuits, and the live and neutral wires. I learned about the causes of excessive current in home circuits and learned how to use electricity safely. In Chapter 20, we learned about electric and magnetic fields, and we learned about electricity and magnetism, magnetism and electricity, and electric motors.

In Chapter 21, we learned about the transmission of information, the composition of the information, the generation of electromagnetic waves, and the knowledge of radio, television, and mobile telecommunications. In Chapter 22, we learned about energy and sustainability, nuclear energy, and solar energy.

The above is the content of the summary of the knowledge points of each chapter of the ninth-grade physics of the People's Education Edition.

The main contents include electromagnetic phenomena and the law of conservation of energy, as well as the basic knowledge of electrical energy and the development of energy. These are the most basic physics contents.

Molecular thermal motion, internal energy; transformation and conservation of energy; characteristics and calculations of series-parallel circuits; Calculation of series-parallel voltage; Ohm's Law; calculation of electrical power; The distinction between magnetogenesis and electromagnetism is based on series-parallel circuits, and the calculation and drawing of current and voltage of series-parallel circuits are the most difficult points.

There will be basic formulas for each chapter of the book, as well as explanations of important terms, which are more important and easy to examine.

What about high school physics? What are some good ways to study?

Now there are many friends, all say that for high school physics is a relatively difficult subject, which makes physics a kind of sore in the hearts of many high school students, in fact, learning high school physics is also very simple, as long as you master good ideas, cultivate your own study habits, let yourself like this subject, in fact, it is relatively simple.

High School Physics Textbook.

1. Learn more, observe more, and think more.

In fact, high school physics is about some theorems of things in nature, these are many things around us that contain these truths, there is physics everywhere in life, for example, every time we take a car, we can see the outside world and the things outside these cars are going backwards, this is the reference in our high school physics, this knowledge point, there is knowledge everywhere in life, you have to experience it with your heart.

As long as we have an eye for discovery, you must look more at the many phenomena in your life, whether it is natural or life, you also have to look at the stars at night, see their changes, you will also find light and heat in physics and some law problems. This knowledge is still present in our lives.

1. Learn to start with theorems.

You have to attach great importance to some theorems and some dead concepts and some laws, but you not only have to remember this knowledge from time to time, you have to learn how to use it, this is the key, smart children are using these formulas and then applying them to their own mistakes, from which to find the problem, you also have to do from a small mistake, you can review a lot of knowledge, it is really a double harvest, which is also the key to whether students can open up in high school physics.

Second, change the incomprehension to be very proficient.

For learning, if you like this subject more, the better you will learn, maybe for various reasons to make you like this subject, maybe because of the teacher, some teachers grasp it tightly, you learn this subject very well, but some students just like this teacher and like this subject, if you change the teacher, you will not learn well, in fact, this is harmful to yourself.

High School Physics Exam Papers.

Read every textbook, read every unit, learn every problem, have key insights and solutions for every exercise in high school physics, maybe they use the same knowledge, as long as you remember a theorem you can do many similar problems.

What textbooks? There is a big difference between the new curriculum standard and the old curriculum standard.

Middle School: Mechanical Mechanics.

Basic Electricity. Optics High School: Classical Mechanics (Newton's Three Laws).

Electrical (electromagnetic induction) of the properties of light.

understanding of atomic transitions, etc.

Chapter 1 Knowledge of Acoustic Phenomena.

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