Investigation report on physics and life, investigation report on physics

Sounds around us.

In our world of brilliant colors, sound plays an important role. What will happen to a world without sound. Let's imagine what kind of world that would be. Is it interesting? Cold? Quiet? Or ......

Humans are the masters of the world, so what will voices do to humans in the first place? Let's talk about the impact of sound on humans first! What would happen to humans without sound?

If there is no voice, people can't speak, just like those who have lost their voice talking in mute. Why do people have ears? And there is no sound to hear, is it for decoration?

How can there be those beautiful ** now? If there is no sound, what is the point of the whole world being dead in a universe as quiet as death? If there is no sound, how can students read and read in school?

And how can there be **, English, information ......What about the curriculum? How will you express what you want to express, do you rely on sign language? I can't imagine what teaching would have been like.

Pangu, the ancestor of China, created human beings because he felt that the world was too quiet, too lifeless, but now there is no sound, there is no laughter. So why should there be human beings, and what is the point of having human beings? We are not Beethoven, nor do we have Beethoven's skills, even if we can't hear, we can bite a stick with our teeth and feel sound based on the vibration of our skull, but if there is no sound, not even sound waves, even Beethoven can't feel sound, let alone play the piano.

If there is no voice, how can there be a current **, and if the relatives are far away, how will they talk? Is it possible to play sign language from such a distance? If ......If ......There are too many ifs, and I think these ifs are not okay, all in all, humans need sounds.

It's hard to imagine how humans would survive without sound! Of course, it's not just humans; Animals also need sound, and even animals cannot survive without sound; Let's take an example! The bat can be said to be a special animal, although it has a pair of eyes, it is said that it can always see if it can't hear, but you know that it is known as the "blind man" in the animal kingdom.

Its eyes are not worthy of its name, because it rests on its ears. Use your ears to listen to ultrasound to identify locations and avoid obstacles. If there is no sound, the bat can't hear the sound, can't catch food, and can't fly, then does it still have a chance to survive, of course, it's not just the bat, other animals are also inseparable from sound.

Here is an example to emphasize that "the earth cannot do without sound".

There is no sound, people seem to live in a vacuum, quietly, without a sound. There is no sound of wind and rain, the sound of reading, more birds, singing, laughter. Therefore, in this universe where human beings live now, there cannot be no color, and even more so sound.

The secret of the rotation of the light bulb.

Before the winter vacation, the teacher assigned a holiday homework, that is, everyone discovered a natural phenomenon around them, **the scientific truth, and wrote it as science and technology**, and the school began to exchange awards.

One night, when it was very cold, my grandmother and I sat around the charcoal brazier in the living room to keep warm. As soon as I looked up, I saw a strange thing, the white light bulb with a plastic cap hanging in the middle of the living room spun up automatically, and it was moving in a circular motion about a meter in diameter around the brazier. At first I thought it was the wind blowing, but I observed my grandmother and asked what the reason was.

My grandmother stared at the light bulb that was spinning faster and faster, and said to me mysteriously, "It's the New Year, maybe your deceased grandfather has returned." Let's stir-fry some food tomorrow and worship it.

At that time, I thought: My father often told me that there are no ghosts and gods in the world, and that living people worship their deceased relatives just as a kind of memorial. Suddenly, my eyes lit up:

Isn't this the science around us? I'm going to get to the bottom of it.

The next day, Dad came back from a business trip. I can't wait to tell him about the strange things that happened last night. Dad said:

It's a normal physical phenomenon, and if you do an experiment, you'll understand the truth. "Under my father's guidance, I was excited to find the materials for the experiment: a burning honeycomb coal stove, a wool thread and a piece of cardboard.

I first tied the cardboard to one end of the yarn, and then fastened the other end of the yarn to the ceiling of the bathroom, so that the cardboard hung about a meter above the ground. Then I closed the doors and windows, and the cardboard did not move, and then I put the coal stove under the cardboard and looked closely, and in a few moments, the cardboard turned on its own. I moved the coal stove out of the way again, and after a while the cardboard didn't move again.

I patted my head and said, "When the light bulb turns around, it's not the ghosts and gods, but the heat of fire." Dad inspired

Think about the science and find out for yourself. ”

I found science books and "100,000 Whys" and studied this phenomenon carefully, and figured out the reason: the charcoal fire causes the air above it to rise in temperature and expand, while the hot air is lighter than the cold air around it, and it keeps rising. In order to achieve equilibrium, the cold air is constantly flowing to supplement the rising hot air, so that the air above the brazier forms a vortex movement of air, which is actually the hot air that we can usually feel but cannot see, and under the action of this hot air, the hanging bulb of course rotates with the air flow.

I figured it out, and I felt indescribable joy in my heart.

Scientific knowledge is really omnipresent, and when you do it, think about it, you will understand it.

What is the investigation report of physics?How many hundred words?

An investigation report generally consists of two parts: a title and a body.

a) Title. Titles can be written in two ways. One is the standardized title format, that is, "subject of the document" plus "language", and the basic format is "investigation report on ", "investigation report on ", "investigation", etc.

The other is a free-style title, which includes three types: declarative, question-based, and a combination of main and subtitle.

b) Text. The text is generally divided into three parts: the preface, the main body, and the ending.

1 Introduction. There are several ways to write it: the first is to state the cause or purpose of the investigation, the time and place, the object or scope, the process and method, and the composition of the personnel and other circumstances of the investigation itself, from which the central question or basic conclusion can be derived;The second is to write down the historical background, general development process, current situation, main achievements, outstanding problems and other basic information of the survey object, and then put forward the central question or main viewpointThe third is to get straight to the point and directly summarize the results of the investigation, such as affirming the practice, pointing out the problem, prompting the impact, and explaining the central content.

The preface plays the role of the finishing touch, and it should be concise and concise, and the topic should be straight to the point.

2 Subject. This is the most important part of the survey report, which details the basic situation, practices, and experiences of the survey and research, as well as the specific understandings, viewpoints, and basic conclusions drawn from the analysis of the materials obtained from the survey and research.

3 Ending. There are also many ways to write at the end, which can put forward ways to solve the problem, countermeasures or suggestions for the next step to improve the work; or summarize the main ideas of the whole text to further deepen the theme; or ask questions that provoke further thought; Or look to the future, give encouragement and call to action.