A little bit about 100,000 whys

1. Why does it rain?

This is because the water of rivers, oceans, and lakes turns into water vapor when exposed to sunlight. Water vapor rises into the air because the sky is cold, and when water vapor encounters cold air, it becomes small water droplets, Xiaoice crystals and finally clouds.

The small water droplets that make up the cloud are supported by the upper and lower air currents. The small water droplets and Xiaoice crystals in the cloud collide and merge with each other in motion, and some water vapor directly adheres to the surface of the ice crystals, and the Xiaoice crystals will grow, and when the updraft cannot support it, it will fall under the action of gravity, forming various forms of precipitation (rain, snow, hail, etc.).

During the descent, the temperature at low altitude rises, and the ice crystals melt, which becomes rainfall. When some Xiaoice crystals become relatively large ice crystals, they will fall directly to form hailstones.

2. Why does a beautiful rainbow appear after rain?

The sun creeps out after the rain, and a colorful rainbow sometimes hangs in the sky. This is because the air after the rain is very humid. There were also many small droplets of water hanging in the air.

The sunlight shines on these small water droplets, and due to the different refractive indexes, when various colors of light pass through the small water droplets, different degrees of deflection occur, so that various colors are scattered and presented, forming a beautiful rainbow.

3. Why does it thunder?

When the air near the ground is constantly heated and rises, and the cold air in the upper layer sinks, a strong convection is formed, thus forming a towering cumulonimbus cloud, and the water vapor in the cloud rushes everywhere, which will produce static electricity, and the upper end of the cloud will produce a positive charge, and the lower end of the cloud will produce a negative charge, and the ground is a positive charge, and when the charge is neutralized, a large amount of light and heat will be emitted, so that the air will expand in an instant, and the light will be lightning, and the expansion will make a huge sound is thunder.

4. Why doesn't it thunder in winter?

In winter, due to the control of the continental cold air mass, the air is cold and dry, and the solar radiation is weak, the air is not easy to form violent convection, so thundershowers rarely occur, so thunderstorms are rarely seen in winter.

5. Why is the lake water salty and light?

Most lakes are formed by river water infusion. As the river flows, it dissolves some of the salts in the rocks and soil. and bring salt into the lake.

If the lake has an outlet, the salt will be lost with the river water, and the lake will be light. If the lake has no outlet or is not well drained, the salt will slowly settle down and the lake will be salty.

6. Why is the clear sky blue?

Clear skies are blue because of the scattering of sunlight, which hits many obstacles such as oxygen, nitrogen, and many small particles as it enters the Earth's atmosphere.

Among them, the red light has a strong penetrating ability and can directly pass through obstacles to the ground. The penetration of blue light is weak, and when it hits an obstacle, it is blocked in the air, forming a scatter that fills the entire sky, so that the clear sky appears blue.

10,000 Whys is a popular science book organized in an innovative and unique indoor travel format, with six chapters focusing on everyday items in the home, such as faucets, stoves, tables, and wardrobes. The authors ask interesting and unexpected questions about these items, such as "Why do we wash with water?" And "Why do clothes keep us warm?"

The book is written in a straightforward question-and-answer format, with lively writing to explain and impart practical knowledge in everyday life, encouraging readers to observe and think about the world around them.

The book has had a positive and imitative impact on the dissemination of knowledge and popularization of science, inspiring generations of young people to pursue science. Its influence has spawned countless books of the same name, which have become synonymous with popular science books for children. The sixth edition of 10,000 Whys was released in August 2013 and presented a new look to a new generation of readers.

To sum up, "10,000 Whys" is a popular science book covering a wide range of topics such as astronomy, geography, animals, plants, physics, chemistry, military, transportation, history, culture, art, sports, etc. Its engaging format and practical knowledge make it an invaluable resource for readers of all ages.

1.During the day, birds scream in the branches and fly freely in the sky under the blue sky. At night, just like us, rest, sleep, and regain strength, but the sleeping position is different.

2.Sorbet is bubbling because there is invisible moisture in the outside air. When you touch a cold ice cake, it will liquefy into fog droplets and surround the edge of the ice egg roll when it is cold, as if the ice cake is "bubbling".

3.The stems of sunflowers contain wonderful auxins. Once the light hits, it hits the backlit side, and at the same time, the cells on the backlit side multiply rapidly, so the backlit side grows faster than the light-oriented side, causing the optical rotation to bend.

4.The shell (exoskeleton) of the cicada is hard and cannot expand as the cicada grows. At a certain stage, the cicada's exoskeleton restricts the growth of the cicada, and the cicada sheds its original bone multiplication, which is the cicada's metamorphosis.

5.The bees first spit the sweet juice of the flowers into an empty hive, and in the evening, they inhale the nectar into the honey, swallow it again, swallow it again, swallow it again, swallow it again, and swallow it again and again, and it takes 100,240 times to make sweet honey. 6.

We see stars shining, not because of the luminosity of the stars themselves, but because of the blocking of the atmosphere. When starlight passes through the atmosphere, it is affected by the density and thickness of the atmosphere. The atmosphere is not absolutely transparent, and its transparency varies depending on the density.

So when we look at the stars through the ground, we see that the stars seem to be flickering.

Simple question:1. Why can fireflies emit light?

2. Why don't we eat raw potatoes?

3. Why don't you drink milk on an empty stomach?

4. How do crocodiles have children?

5. What is the secret of the carrier pigeon's return of thousands of miles?

6. Why is Eagle Eye so sharp?

7. Why is the sun round?

8. Why do chickens eat grains of sand?

9. Why don't carrier pigeons get lost?

10. Why do dogs stick out their tongues in summer?

Book IntroductionThe name "One Hundred Thousand Whys" is borrowed from the popular science book "One Hundred Thousand Whys" by the Soviet scientific writer Ilyin (whose real name is Ilya Yakovlevich Marshak). Ealing is also taken from a poem by the British writer and 1907 Nobel Prize winner Joseph Rudyard Kipling: "Five thousand in **?

What about seven thousand? 100,000 why? "One hundred thousand" is a virtual finger that is used to describe many.

100,000 Whys, published in 1961 by the Shanghai-based Juvenile and Children's Publishing House, often uses the phrase "Why? Each article is a few thousand words of popular works of science. For more than 50 years, the brand has influenced countless readers on the road to knowledge.

100,000 Whys mainly introduces some explanations of the reasons why it happens that are common in life but are not known to happen.

Introduction: 100,000 Whys is the first popular encyclopedia in China, divided into five volumes: physics, chemistry, astronomy and meteorology, agriculture, physiology and hygiene, and more than 5 million copies were distributed in the first edition. It was published by China Juvenile and Children's Publishing House in January 1961.

It's not a book, it's a work published as a set. Its content is very extensive, and it introduces all kinds of scientific knowledge in the form of one question and one answer, and the text is not long, and it is very simple to understand, which is very in line with the cognitive mode and reading characteristics of young readers.

The name "One Hundred Thousand Whys" is borrowed from the popular science book "One Hundred Thousand Whys" by the Soviet scientific writer Ilyin (whose real name is Ilya Yakovlevich Marshak). Illin is also taken from a poem by the British writer and 1907 Nobel Prize winner Joséf Rudyard Kipling: "Where are the five thousand?

What about seven thousand? 100,000 why? "One hundred thousand" is a virtual finger that is used to describe many.

100,000 Whys, a brand of books pioneered in 1961 by Shanghai-based Juvenile and Children's Publishing House, often uses the phrase "Why? Each article is a few thousand words of popular works of science. For more than 50 years since its birth, the brand has influenced countless readers on the road to know with its form close to the readers of Qinghail and the strict selection of ** content.

Since 1961, "100,000 Whys" has been regarded as a book brand by the industry, with large-scale development and utilization, and books of the same name have emerged in an endless stream, but "100,000 Whys" published by Shanghai Juvenile and Children's Publishing House has still become the first choice of readers with its unique concept and strict requirements for quality.