Write a science essay of more than 600 words on the topic of The Silent World .

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.

However, the absence of sound also means that the birds are no longer singing; The worms no longer sing; The flowing water is still there, but it is just silently moving forward; You can no longer talk to your friends; When you laugh, Bill can only see your big mouth ......How lonely it must be! In addition, without the so-called "nagging" of the teacher's father and mother, maybe the world will be crazy!

A silent world.

What would the world be like if there were no sound? If the world had no sound, we would no longer have language; If the world had no sound, living beings would not need hearing; If the world had no sound, there would be no rock 'n' roll jazz; If the world has no sound, there will be no radio and no films; If the world has no voice, society may be in a lot more dangerous; If the world has no sound, there is no world.

In this world, there is music and noise, but these two words are the same. Fortunately, we have ears and can hear the world. If there is no sound, the world becomes dead silent, and that is terrible for us.

What would happen to us if there really was no sound?

If you enter a world where there is no sound, you can hear your own heartbeat, the rubbing of your clothes when you move, and even the sound of joints rubbing and blood flowing. After half an hour, your hearing will be sharper, and as soon as you inhale lightly, it's like hearing a loud shout. Even a needle falling on the ground can feel like a hammer hitting the ground.

After an hour, you start to feel extreme fear; After three to four hours, you lose your mind and gradually move towards the trap of death.

You can see how terrible it is to have no sound. Is deafness the same as in a world without sound? I didn't realize that I was very happy to be able to hear voices before, so I'm going to really regret it in the future. Let's enjoy the wonderful sound more.

If the world had no sound, we would no longer have language; If the world had no sound, living beings would not need hearing; If the world had no sound, there would be no rock 'n' roll jazz; If the world has no sound, there will be no radio and no films; If the world has no voice, society may be in a lot more dangerous; If there is no sound in the world, there is no physics teaching; If the world had no sound, there would be no "Silent World".

This week we learned about "Sound Phenomena", in fact, this chapter is very interesting, after studying it, I know how sound is produced, how it is transmitted, what can be transmitted, what the tone is, I know all these things.

Sound is produced by the vibration of an object, and sound is propagated in the form of waves, gases, solids can transmit sound, in fact, liquids can also transmit sound, but vacuum cannot transmit sound. The frequency range that one can hear is from about 20Hz to 20,000Hz. Above 20,000 Hz is called ultrasonic and can transmit energy, in addition to air pollution, water pollution, solid waste pollution and noise pollution.

If suddenly exposed to noise up to 150db, the eardrum will rupture and bleed. Both ears are completely deaf, so take care of your ears.

What kind of world would it be if there was suddenly no sound in the world?

If there is no voice, it will be difficult for people to communicate; If there is no voice, the world will be disrupted; If there is no voice, there is no point in what people do; If there is no sound, nature would not be a little interesting. The silent world is scary and frightening. Maybe we don't dare to imagine what the silent world is like anymore?

Sound is a part of our lives, sound is the information we communicate, and sound is something we must use. If there is no noise, we may live a little more freely, but if there is no noise, we will have less pain. Sometimes the sound is good, and sometimes it is bad.

Do you understand the silent world?

A silent world.

In this world, sound surrounds us all the time. With sound, we can communicate with each other. With sound, we can deliver information. With sound, our world becomes more colorful.

What if there was no sound in the world? The classmates behind you are shouting at you, and you can't hear you. Birds chirp overhead, you can't hear them.

You can't hear the horn of a car. I want to tell my mother about the grievances in my heart, but no one can hear it. If you want to say "I love you", only the heart knows.

What if there was no sound in the world? We lose most of our way of delivering information. We don't know what danger is coming. We won't know how wonderful it is. We will be alone in the silence of death.

Fortunately, our world is full of birds.