Speech on Technology and Life 1 Dear teachers and students,
Hello everyone!
When it comes to science and technology, people will definitely think of high-performance things such as spaceships and artificial satellites, but they are still far away from us. With the progress of human civilization and the development of science, high-tech is not limited to weapons and satellites, but it has gradually penetrated into our lives, but it is not easy for us to detect when we use the telephone to "spread sound thousands of miles"; When we listen to this mp3; When we play computer, aren't we all enjoying technology? We should touch it every day and use it ... solar cars are also a bright spot. It can not only save energy, reduce emissions, protect the environment and save decreasing resources, but more importantly, it is a major breakthrough in human science and technology. With it, we can live in an environment without carbon dioxide!
With the progress of science and technology, we have also seen the change of communication mode: from the method of bonfire and fast horse at the beginning, it has gradually developed into a "brick" that can only make phone calls, then into a gray PHS, and then into a landline and landline. Now there are more and more technologies, and there are more and more ipone and ipad. As a new generation of primary school students, we should not only enjoy life, but also set up lofty topics and ideals, study hard, learn science well, invent more new technologies and create a new life!
Yes, knowledge is power. Let this well-known word always inspire us to sail and be a new generation that loves science and invention! Let's write the song of science and technology in the future of our motherland together!
Speech on technology and life 2 Dear leaders, teachers and dear students,
Hello!
The topic of my speech today is "Science and technology make the flower of human civilization bloom".
As we all know, "technology is the primary productive force." "Innovation is the soul of a nation's progress." Human beings benefit from science and technology, which benefits from innovation, and innovation is the soul of science and technology. From the dream of genetic engineering to the promise of nanotechnology to ensure that you don't have to wash clothes; From the warmth of artificial intelligence "giving you a lovely robot dog" to the spectacle of transgenic technology "making mice grow human ears"
The new technology is changing with each passing day, which makes people ecstatic. Not only that, popular science knowledge has also become the focus of our attention. Einstein, Hawking and Bill Gates are the stars in our minds, and computer science, modern physics and chemical kinetics are influencing us all the time. Science and technology, it represents a spirit, a strength, an innovation and a civilization.
I believe that the place where the spring breeze blows will leave a lot of vitality, because the tenderness of the spring breeze is full of vitality; I believe that the place where science and technology go will sow the seeds of civilization, because there is infinite hope in the fortitude of science and technology. Throughout the history of human civilization, technology is everywhere.
Ancient savage wars began to use fire for cooking, heating and lighting; Cai Lun paper, 1800 years ago, appeared in the streets and courts; Stephenson made the first locomotive; Edison invented the first electric lamp; The submarine dived into the seabed for the first time; The rocket rushed into space for the first time ... every invention and innovation has caused profound changes and great progress in society and deeply shocked the world!
This is the charm of technology! Generally speaking, today's high-tech human society-land, sea and air transportation extending in all directions, rapid information and communication technology, laser technology, aerospace technology, microelectronics and computer technology. , are the crystallization of science and technology. From a small point of view, the basic necessities of life are also the benefits brought by science and technology.
Technology has been integrated into life and enriched it. The invention of traffic lights is a kind of traffic civilization, which not only brings convenience to people, but also is a kind of safety, which makes people no longer afraid of traffic. Various household appliances have entered thousands of households, and the Internet allows us to be familiar with what is happening in the world without leaving home ... Our life has entered an era of quality and efficiency.
Students, technology is not far away. Do you know that?/You know what? The inventor of Jenny's textile machine is a worker, the inventor of reinforced concrete is a gardener, and the inventor of the lifting basketball stand is a pupil ... ordinary people will have extraordinary creations. Scientific research also shows that a person's success 15% depends on intelligence factors, while 85% depends on non-intelligence factors.
Take action, awaken the sleeping creative masters in our minds, and open the mystery of science and technology with careful patience and perseverance. You will be pleasantly surprised to find that success is not far away, and technology is around you!
The fire is burning for a hundred generations and the lights are shining for a thousand years. Students, let's hold high the flame of civilization and cross the century. Create a beautiful and exquisite life of mankind with the magic and greatness of science and technology. Let China's star of science and technology reflect the splendid culture of 5,000 years, and let the fire of Chinese civilization shine among the nations of the world.
My speech is over, thank you!
Technology and Life Speech 3 Hello, teachers and students. My name is Dong Junhao. Now I'm going to tell you a little science story that happened to me. Please listen carefully and think about what the scientific mystery is.
One morning, my mother cooked two eggs for my breakfast. "Hoo, hoo, hoo!" The hot water kettle gave a cheerful cry and told me, "The eggs are ripe, and some have been eaten!" . The strange mother turned off the gas, took out an egg and put it in the water, and put the other in an empty bowl. Mother suggested that we have an eggshell peeling competition to see who can peel it quickly and well. I immediately promised: "No problem, let's compare, who is afraid of who!" " "The game started, so I quickly peeled it off. "I'm ready, I stripped, Dong Junhao, you lost. "Mother shouted proudly. I can't believe it. I haven't peeled it yet. Mom peeled it in the blink of an eye. I said unconvinced, "Mom, you cheated. Your eggs must be smaller than mine. "
Students, do you know why I lost? ..... Then please listen!
"Hao Hao, do you find any difference between your mother's eggs and yours?"
I thought it over carefully and quickly said, "Mom, you are taking eggs in cold water, and I am taking eggs in an empty bowl."
"Yes, Hao Hao is really smart. This is the mystery of science-the principle of thermal expansion and cold contraction. Eggs are heated in a hot pot, and when heated, they become bigger. When hot eggs are put into cold water, the eggs will shrink in size when they are cold. At this time, there will be a gap between the protein and the eggshell, which will not stick together. Mom can peel off a large piece of egg shell at once when peeling.
My mother told me that there are many little scientific knowledge in life, and you can find it if you observe it carefully.
Students, do you understand? Go home and do the experiment if you have any questions!
My story is over, thank you!
Speech on Technology and Life 4 Dear teachers and students,
When it comes to science and technology, people may first naturally think of artificial earth satellites, manned spacecraft, atomic bombs and other things that seem out of reach. She often gives people a feeling of being above others. In fact, with the rapid development of science and technology, science not only serves the cutting-edge science and technology, but also permeates our daily life more and more. Technology and life have long been inseparable, and technology is everywhere.
During the summer vacation, I participated in the summer camp for young journalists in Beijing. During the days when we were away from our parents, the teacher asked us to inform our parents about our activities every day. When staying in a hotel in Beijing, it is extremely difficult to find a public telephone because people are different and can't walk around casually. Ic phone cards prepared before leaving are often lost. At this time, I will especially envy those "group friends" who have mobile phones, and I will deeply feel the convenience that mobile phones bring to people.
In China Science and Technology Museum, we saw the old hand-cranked telephone that can only be seen in TV and old movies, and we also learned how inconvenient it is for people to contact in the primitive way in the era when there is no telephone. Every time I see the footage of party member risking his life to send messages and losing contact signals in the battle, I can't help thinking, if I had a mobile phone, wouldn't I have avoided these unnecessary sacrifices? From time to time, I will be more aware of the power of science. Science has not only changed the whole world, but also changed our lives. Science is all around us.
A few years ago, people called mobile phones "mobile phones" and pagers "bb machines". Making and owning them is something to show off. It seems that this is a symbol of money and status, and it is synonymous with "big money" and "fashion". Today, with the rapid development of science, the telephone has spread to thousands of households. From white-collar workers in companies to ordinary vegetable farmers and even people who collect waste products, their dependence on it is increasing day by day. It occupies an increasingly important position and becomes an important means of communication in people's life and work. It is obvious to all, from fixed telephone to mobile phone, from single communication tool to color screen and video mobile phone, it makes people's life colorful. Seeing this, you can't help sighing at the rapid development of science and technology.
As a new generation of middle school students, while enjoying our new life, we should set up lofty ideals and aspirations, love science, learn science well, and create a new life from an early age. Every student here probably has the same dream. When they grow up, they want to be scientists, produce more scientific research results and contribute to the construction of the motherland and human civilization. This is a lofty goal. In fact, we learn scientific knowledge not only to become scientists, but also to adapt to the ever-changing new life.
Therefore, from now on, we should cultivate a strong interest in learning, study science and technology knowledge hard, learn various cultural classes well, read more popular science books and actively participate in various scientific and technological activities. There is no limit to human wisdom. No matter the Challenger explosion in the United States or the global computer virus upgrade, it will never stop the scientific and technological progress of mankind. "Knowledge is power", Bacon's famous saying inspired many people who are eager for knowledge. Now, let's use it to motivate ourselves, be a new generation that loves science, and write more brilliant poems for the future of our motherland!
Thank you all.
Speech on Technology and Life 5 Hello, teachers and students! I'm He Jiaxin from Class 1, Grade 2. Today, the topic of my speech is "Technology and Life". In recent years, we have seen the rapid development of science and technology in China, which makes me feel very proud. I am a China native. A long time ago, there was almost only one purpose of mobile phones, that is, making phone calls. However, since a few years ago, mobile phones have changed a lot, not only with beautiful appearance, but also with many uses. You can use your mobile phone to send short messages, take photos, have meetings, surf the Internet and so on, which makes our life more convenient and makes me more aware of the power of technology. However, I am just a fledgling student now, and I know little about the word "technology". I can't explain the mystery of science and technology with some profound theories, but I am willing to think about science and technology and the future from the perspective of a student.
Although the prospect of technology creating a new life is fascinating and fascinating. But in the final analysis, it depends on the concerted efforts of all of you, Qi Xin. As the backbone of the future construction of the motherland, the burden of our generation is really not light, and new opportunities are always accompanied by risks and challenges. However, we will not give up easily. We swear to our predecessors with our youth that we will never live up to their hopes.
Looking back at the course of civilization, it is the light of science and technology that sweeps away the darkness of ignorance in human history, and it is the fire of science that ignites the burning hope in human hearts; Science and technology support civilization, science and technology create the future, and the future is in our hands. Let's become explorers of knowledge, let's roam on unknown roads, and let's use our creativity to make the world we live in a better place.
Speech on Technology and Life 6 Dear teachers and students,
Good morning everyone. I'm Jin xx from Class 903. The theme of my speech today is "Technology and Life".
I think everyone should know that there have been many air crashes in the past 20xx years. In the early morning of March 8, 20xx, Malaysia Airlines Flight mH370 to Beijing lost contact with the ground after taking off. There is no news yet. On the night of July 17, 20xx, a Malaysia Airlines Boeing 777 with 298 people on board crashed in Ukraine near the Russian border. 20xx65438+On February 28th, AirAsia Indonesia 1 crashed into the sea, killing 162 people on board. ...
Aircraft is a convenient means of transportation created by modern science and technology. While enjoying the achievements of modern science and technology, we are also suffering from the sadness and loss caused by the limitations of science and technology.
In order to investigate the air crash, scientists invented the black box, so as to find out the reason afterwards and constantly improve the aircraft manufacturing technology. In fact, black box is one of the special electronic recording equipment for aircraft, which is called aviation flight recorder. It is mainly composed of flight data recorder and cockpit voice recorder, which records important parameters in flight. It is a streamlined container made of special solid materials. For easy identification, they are usually orange. The black box is also equipped with a radio beacon. This device can automatically and regularly transmit radio signals with a certain frequency, which is convenient for special receivers to accept. Based on this design, the black boxes of crashed planes can generally be found. If the plane crashes at sea, the fragments of the plane will fall into the sea. Search and rescue personnel usually use sonar technology to look for aircraft wreckage in the sea. Sonar is a tool for sound detection. Sonar emits ultrasonic waves into the sea and receives reflected waves, and uses the reflected ultrasonic waves to find targets.
Just last week, the good news came. 10 The black box of the AirAsia passenger plane that crashed on February 28th has been found. We believe that after expert analysis, the cause of the plane crash will soon be found. However, even such advanced technical design can't be found. Regrettably, Malaysia Airlines Flight mH370, which crashed on March 8 last year, has not been heard from or seen by the black box. Part of the reason is that the power supply time of the black box is only over a month, and it is also limited by the search and rescue means that are not advanced enough at present.
In response to this phenomenon, Canada's FirstAir Airlines recently announced that it will install a "Never Lost" real-time tracking device (FLyHT) for its passenger aircraft. It is reported that this new instrument weighs less than 3 kilograms, which is about the size of a hotel room safe. It can automatically activate and send out detailed four-dimensional positioning signals when there is a problem with the aircraft. However, this new instrument, like the traditional black box, will not transmit data to the ground in real time, and it is still unknown whether the new instrument can be started smoothly in an emergency.
With the progress of society, technology is always developing with each passing day. We are creating brand-new technology, and technology is also changing our daily life. In the historical process of promoting scientific and technological progress, we don't have to stop flying because of a plane crash and completely deny the role of science and technology. After all, most of these incidents are small probability accidents, and these are also the "tuition fees" that human beings must pay to promote scientific and technological progress. Witnessed the power of science and technology, we have reason to believe that science and technology will inevitably make our lives smarter and better.