China Youth Science and Technology Innovation Competition

The National Youth Science and Technology Innovation Competition (hereinafter referred to as "Innovation Competition") is a comprehensive science and technology competition with a history of more than 20 years. It is one of the demonstrative and instructive science and technology education activities for primary and secondary school students, and it is a concentrated display form of outstanding achievements of various science and technology activities in primary and secondary schools in China. The English name of the innovation contest is: China Youth Science &; Technological Innovation Competition (CASTIC).

I. Purpose

The fundamental purpose of holding innovation competition is to promote the vigorous development of young people's scientific and technological activities, cultivate their innovative spirit and practical ability, improve their scientific and technological quality and encourage the emergence of outstanding talents; Improve the scientific quality and skills of science and technology counselors and promote the popularization and development of science and technology education.

Two. Time and place of holding

The innovation contest is held once a year, and the final evaluation is made in August every year.

The venue of the Innovation Competition shall be applied by the provinces (autonomous regions and municipalities) and determined after investigation by the organizers. A flag-raising ceremony was held at the closing ceremony of the last innovation competition.

III. Contents of activities

The innovation contest is divided into two activity sections: teenagers and science and technology counselors. The activities include two series: competition activities and exhibition activities.

Competition activities include teenagers' scientific and technological innovation achievement competition and scientific and technological counselors' scientific and educational innovation achievement competition.

The exhibition activities include excellent children's science fantasy painting exhibition, excellent teenagers' science and technology practice exhibition and science and technology education scheme exhibition of science and technology counselors.

In addition, a forum of scientific and technological advisers has been established.

Four. entry procedures

Participants should first participate in grassroots selection activities. Winners of some provincial (autonomous regions and municipalities) competitions are recommended by the provinces (autonomous regions and municipalities) to participate in the National Innovation Competition in accordance with the prescribed quota and requirements.

Verb (abbreviation for verb) reward

The winner of the competition will be commended and rewarded by the organizer. The organizing committee of the contest will commend and reward the winners of the exhibition series.

The Innovation Competition accepts special awards set up by relevant enterprises and social organizations. In accordance with the principle of establishing special prizes, the winners of special prizes are selected and rewarded.

A historical overview of intransitive verbs

The origin of the National Youth Science and Technology Innovation Competition dates back to 1979 at the beginning of China's reform and opening up 29 years ago. That year, China Association for Science and Technology and the Ministry of Education held the "First National Youth Science and Technology Exhibition" in Beijing. This exhibition has attracted the attention of the party and the country. Comrade Deng Xiaoping wrote an inscription for the event: "Teenagers are the future of the motherland and the hope of science!" This is the predecessor of the National Youth Science and Technology Innovation Competition. In the following 20 years, with the attention, care and strong support of the Party and the country, and with the efforts of many scientists of the older generation, China Association for Science and Technology took the lead in holding two large-scale national youth science and technology activities, namely "National Youth Invention and Creation Competition and Scientific Seminar" (starting from 1982 and renamed as "National Youth Science and Technology Innovation Competition" in 2000) and "National Youth Biological and Environmental Science Practice Activities". These two activities are held every two years, and alternately held all over the country every other year. Since 1982, it has been held in Shanghai, Kunming, Lanzhou, Beijing, Shenyang, Chengdu, Nanning, Changsha, Tianjin, Xining, Hong Kong, Hohhot, Hefei and Fuzhou. In order to adapt to the development situation and prospect of China's youth science and technology activities, and to connect with the international youth science and technology exchange activities, the organizers began to reform these two activities in 2000, integrating the two activities, adding up the number of sessions, and named them "National Youth Science and Technology Innovation Competition", which is held once a year. Activities include all the contents of the above two activities.

After more than 20 years of continuous development and improvement, the contest has accumulated rich experience, constantly drawing lessons from successful experiences at home and abroad in the content and form of activities, making the innovation contest firmly grasp the pulse of the times, embody the spirit of the times, and make its own characteristics and brands around the cultivation of young people's innovative spirit and practical ability, which has a wide and far-reaching impact on the vast number of young people and all walks of life. At present, the "National Youth Science and Technology Innovation Competition" is a concentrated display form of outstanding achievements of various scientific and technological activities in primary and secondary schools in China, and has become the largest and highest-level scientific and technological education activity for primary and secondary school students and adolescents in China.

Color music test tube

Ancient chime: a percussion instrument made of bronze, which can play all kinds of music in ancient and modern China and abroad. They are called "rare treasures" and "world miracles" by experts in the history of world music.

Modern water music: initiated by Tan Dun, a famous composer in China and winner of the Oscar for Best Original Film Music, it is innovative and thunderous, with rhythmic sound effects and unique playing forms.

Colorful music test tubes appear in the form of bells, and the novelty and uniqueness of water music make people feel natural and wonderful.

Production method:

1. Prepare seven-color solutions: red (iron thiocyanate solution), orange (methyl orange solution), yellow (ferric chloride solution), green (copper chloride solution), cyan (mixed solution of copper chloride solution and olive juice), blue (copper sulfate solution) and purple (potassium permanganate solution);

2. Put the seven-color solution into seven test tubes, adjust the concentration and height of the solution, and hit and emit the singing glottis in turn: 1, 2, 3, 4, 5, 6, 7;

3. Plug it with a suitable test tube plug and wax seal;

Repair.

Features:

(1) The form of chimes, the novelty and uniqueness of water music, can play the most primitive and authentic things but feel the nature.

② The performance is both artistic and ornamental.

③ It embodies the pursuit of music, the worship of chemistry and the belief in innovation.

Fashion flame candle

People in China have used candles for a long time, but most of them are used for lighting. Imagine lighting colored candles with special shapes at your birthday party or class party. On the bundles of flames, there are colorful flame colors: yellow (sodium), purple (potassium), brick red (calcium) and purple red (lithium). You will think that is your favorite.

Do you want to design and make one yourself? The production process is not complicated, and you can do it if you love it.

Manufacturing materials: wax, cotton yarn, colored crayons, sodium chloride solid and saturated solution, potassium carbonate solid and saturated solution, calcium chloride solid and saturated solution, lithium chloride solid and saturated solution, and various models.

Production method:

1. Take a few coarse cotton yarns and soak them in saturated sodium chloride solution, saturated potassium carbonate solution, saturated calcium chloride solution and saturated lithium chloride solution for about 10 minute, then take them out and dry them.

2. Find some pure water bottles with 1.25 liters, cut the lid neatly, and cut the wax into pieces and put it in.

3. Put the pure water bottle with broken wax into hot water at about 95℃, stir the wax in the bottle to melt it all, and then add a small amount of sodium chloride solid, potassium carbonate solid, calcium chloride solid and lithium chloride solid into several different bottles respectively.

4. Prepare a container with beautiful shape that you like (such as a heart-shaped box with chocolate and jelly in plastic) as a model for making flame candles.

5. Pour the melted wax into the mold. Of course, you should first put the corresponding cotton thread as a candle core in the model (liquid wax of solid sodium chloride mixed with cotton thread soaked in supersaturated sodium chloride solution, etc.), and don't add too much wax.

6. After the wax in the model is cooled, melt the colored crayons according to the above method, and then pour the melted colored crayons into the model with their favorite colors.

7. After the overall cooling and setting, put the model in hot water again, and take out the candle after a while, and your favorite fashion flame candle will be ready.

Tips:

1. The flame color of copper is green, and that of barium is yellow-green. Although the color is pleasing to the eye, it is toxic and it is best not to use it.

2. Try not to use nitrate when adding salt, because decomposition will produce harmful gases.