Who knows the answer to the 19th Golden Key Science and Technology Competition Primary School Indivi

According to the official website, as of November 14, 2022, no relevant information has been found

Approved by the Jiangsu Provincial Department of Education and sponsored by the Provincial Civilization Office, the Provincial Association for Science and Technology, and the Provincial Department of Science and Technology, the "Golden Key" is a youth science and technology activity sponsored by the Provincial Department of Science and Technology.

Improving the practical ability of primary and secondary school students box innovative spirit is well received by education departments at all levels and the majority of students and teachers. The CESL activity for junior high school students is part of the "Golden Key" science and technology competition series of activities, focusing on the themes of science, environment, society and life.

Here is a suggestion to see: Golden Key Science and Technology Competition Question Interpretation + Ten Years of Real Questions, and then choose the corresponding book according to the age you want to participate in.

As the largest science and technology competition in the province, the "Golden Key" science and technology competition is sponsored by the Provincial Department of Education, the Provincial Department of Science and Technology, the Provincial Civilization Office, and the Provincial Association for Science and Technology.

"Golden Key" focuses on improving the comprehensive quality of students, deepening students' sense of closeness to science, and allowing students to constantly approach, contact and try the most cutting-edge and extensive scientific and technological innovation and invention.

In recent years, the form and content of the competition have been continuously expanded and innovated, and it has developed into a comprehensive science popularization activity with the competition as the main body, a happy science campus tour, a challenge of intellectual differences between campuses, and a science carnival, which has been widely affirmed and supported by schools, teachers and parents.

A 1: aabaaabcaccacab

A 2: 1 to 2 False, 3 to 4, 5 to 6, 7 to 8, 9 to 10, 11 to 12dui, 13 to 14, 15 to 15.

II 1(1): b (2): a 2(1) c (2) b

3. Divergent thinking.

1 The pump is a common tool made of the relationship between gas pressure and volume. There is a piston in the pump, and there is a concave rubber disc on it, when the piston is pulled up, the volume of air under the piston increases, the pressure decreases, and the air above the piston is squeezed from the rubber disc to the bottom; When the piston is pressed down, the volume of air under the piston decreases and the pressure increases, so that the rubber disc is pressed against the cylinder wall to prevent air from leaking above the piston; Continue to press down on the piston, and when the air pressure is strong enough to open the rubber sleeve on the tire valve (the valve is a one-way valve), the compressed air enters the tire.

2 Pumping machine aka. Water pump. It is a hydraulic machine that uses atmospheric pressure to lift water from a low place to a high place.

It consists of a water pump, power machinery and a transmission device. There are many types to suit different needs. Commonly used are:

Piston pumping. And. Centrifugal water pump.

The structure of the piston pumping machine is simple, easy to operate, but the water output is small, and in the actual case of energy loss, the height of the water can only reach about eight meters, and the efficiency is also low. Centrifugal water pump is a kind of pumping machinery that uses the centrifugal movement of water, its water output is large, the water lifting height is high, and it is widely used in farmland irrigation, drainage and water supply and drainage of industrial and mining enterprises and towns.

One. Questions 9-15: False, True, False, False.

Two. 1.(1) C (2), so it will not exceed the standard.

2.**Magnitude within magnitude.

Source depth. Epicenter tolerance.

Local soil conditions.

The level of fortification of the damaged building.

Population density.

Three. limit the number of private cars, use small displacement cars, and vigorously develop the use of buses; switching to clean, environmentally friendly fuels for vehicles; use of electric vehicles; Automobile exhaust is discharged after being treated with a catalytic purification device I don't know if it's right, but this is the test today.

I don't know, ahhaha, the mirror is browsed immediately.

Summary. For example, carrot building. It's a structure made with a carrot and 50 toothpicks.

This requires you to have wonderful ideas, to work together, to cooperate with each other, and to be careful and skillful.

In this way, you will be able to complete it smoothly and achieve excellent results.

So you must work together and tacitly.

Be patient and skillful at the same time.

How to do the hands-on practice questions of the 33rd Jiangsu Provincial Golden Key Science and Technology Competition for Primary and Secondary School Students?

Hello, how to do the hands-on practice questions of the 33rd Jiangsu Provincial Golden Key Science and Technology Competition for Primary and Secondary School Students?

The 33rd Key Transport Jiangsu Province Primary and Secondary School Students Golden Key Science and Technology Competition hands-on practice questions. It is generally derived from the simplicity of textbook materials. The popularity is particularly strong. The reproduction of the manuscript is very strong, and the ability of the contestants to unite and cooperate with each other is examined.

For example, carrot building. It's a structure made with a carrot and 50 toothpicks. This requires you to have wonderful ideas, to work together, to cooperate with each other, and to be careful to have skillful friendship skills.

In this way, you will be able to complete the fight smoothly and achieve excellent results. So you must work together and tacitly. Be patient and skillful at the same time.

Sincerely answer every question for you! If you are satisfied, it is the best! If you have any questions, please keep asking!

Have a great day! Happy every day.