We will encounter some strange problems in life. If we ask our parents, they can't tell us why, but "100,000 Why" can help me solve these difficult problems in life. This book introduces lovely animals, interesting insects, mysterious space, blue ocean, common sense of life and mysterious earth respectively. It tells me profound scientific principles, helps me understand the world, and makes me form the habit of thinking and asking questions. A good habit of exploration. "100,000 Why" introduces us to the formation process of celestial bodies. I know that Venus, Mercury, Saturn, Jupiter, Mars, Earth, Uranus, Neptune and Pluto are the nine planets in the solar system. Like the solar system, the Milky Way is made up of many nebulae. The earth where we live is just a "little star" in the universe. Why is the sea water bitter and salty? I didn't know why the sea water was bitter and salty before. After reading "100,000 Why", I realized that seawater contains a lot of salt. Sodium chloride is the salt that everyone usually eats. It tastes very salty. Magnesium chloride and magnesium sulfate taste bitter, so seawater is bitter and salty. "100,000 Why" also explains that shrimps and crabs are blue when they are alive and turn red when they are ripe. That's because uncooked shrimps and crabs contain a lot of melanin, while cooked shrimps and crabs only have red pigment, so they turn red. You can find a lot of scientific common sense in this book. After reading 100,000 Why, I understand that there are still many mysterious and unknown things around us waiting for us to observe, think and explore, which makes me realize that the world is so colorful and knowledge is so educational and interesting. It let me know that science is power and knowledge is wealth. I like "100,000 Why". Open the book, interesting knowledge stories make you puzzled. "100,000 Why" enriched my knowledge and broadened my horizons. It is really my mentor and friend.
2. 100,000 common-sense thoughts about what to live for.
One hundred thousand whys is a popular science book, which contains a lot of rich knowledge.
Tell us why there are stars in the sky, why the sun shines, why it rains, why the ocean is a blue treasure house, why the sun shines by itself before and after the earthquake, and why the desert is colorful ... Every article tells us a scientific little truth. It can not only help me broaden my horizons and sing more knowledge, but also improve my interest in learning. Not only can it help me drive, but I didn't know anything about the nine planets and the Milky Way before. "100,000 Why" introduces us to the formation process of celestial bodies.
I know that Venus, Mercury, Saturn, Jupiter, Mars, Earth, Uranus, Neptune and Pluto are the nine planets in the solar system. Like the solar system, the Milky Way is made up of many nebulae.
The earth where we humans live is just a "little star" in the universe.
3. Little knowledge about 100,000 whys
Why can't the stomach digest itself?
The stomach can secrete gastric acid and pepsin, digest protein in meat and convert it into nutrients for human body. The stomach itself is made up of protein, so why isn't the stomach itself digested? Scientists have found that the stomach can also secrete a viscous, jelly-like mucus substance that covers the inner surface of the stomach to prevent the corrosion of gastric acid and pepsin. In addition, the epithelial cells of the mucosa on the inner surface of the stomach are closely arranged special structures, thus forming a physiological barrier. This barrier can prevent stomach acid from invading. As long as the physiological barrier of mucosa and gastric mucosa is sound, it can resist the decomposition of stomach itself.
Why are young people prone to acne on their faces?
Some people are seventeen or eighteen years old, and they often have small pimples on their faces, which are medically called "acne" and generally called "acne". This kind of acne gradually disappears after the age of 30, so it is also called "whelk". There are many sebaceous glands on people's faces. During adolescence, sebum secretion is greatly increased. Sebaceous glands are open in hair follicles, and sebum is excreted from pores on hair follicles. Sometimes sebum is secreted too much, and pores are keratinized under the influence of various foreign hormones, so that sebum accumulates in hair follicles, thus forming small acne on the face. Small black spots are formed at the mouth of hair follicle due to oxidation, and at the same time, because sebum can not be discharged smoothly, invading bacteria multiply in pores, causing inflammation and suppuration, and turning small acne into big acne.
Why do you have so much knowledge?
Whenever I open the book "100,000 Why" and see many profound questions on it, I am very curious.
"100,000 Why" is a series of popular science books with countless contents. From astronomical geography to trivial matters of life, every article tells us a little scientific truth.
It can not only help me broaden my horizons and increase my knowledge, but also improve my interest in learning. It is really my good helper. Before, I didn't know the nine planets and the Milky Way at all.
"100,000 Why" introduces us to the formation process of celestial bodies. I know that Venus, Mercury, Saturn, Jupiter, Mars, Earth, Uranus, Neptune and Pluto are the nine planets in the solar system.
Like the solar system, the Milky Way is made up of many nebulae. The earth where we humans live is just a "little star" in the universe.
"100,000 Why" often introduces us to some interesting natural phenomena, such as how the "four seasons" of a year are formed. What color is the bottom of the sea? Why is the sea blue? .
5. "100,000 Life Common Sense" Life Common Sense 15
What are the characteristics of reptiles?
A: Reptiles are the first true terrestrial vertebrates. Its characteristics: First, reptiles are a group that adapts to land life and have the basic form of quadrupeds. Secondly, the reptile's body surface is covered with horny scales, which are composed of epidermis, animal's heart, atrium and two incompletely separated chambers. In addition, reptiles belong to warm animals.
Do pythons swallow people?
A: The answer is no, because it is not very aggressive to people, so when attacking, it chooses to bite its prey with its mouth and entangle the victim's sternum. Because pythons are weak, they won't break the bones of their prey. At the same time, it doesn't like to eat big live food. Therefore, pythons can't kill people, let alone swallow people.
Why is the Chinese alligator called "the last living fossil"?
A: Archaeologists believe that as early as 70 million years ago, due to changes in the earth's environment, only a few crocodiles adapted to the new environment and survived. Crocodiles are the last surviving offspring of this bloodline. After more than 200 million years of evolution, the Chinese alligator has provided scientific research materials for studying the evolution of animals and revealing the mysteries of nature. Therefore, the Chinese alligator is called a "living fossil".
How do crocodiles give birth to children?
A: Crocodiles are oviparous reptiles. The size and shape of eggs are like eggs. Female crocodiles also lie on eggs like hens' nests. Crocodiles 12 years old can enter childbearing age. In the incubation period, if other animals come near, they will fight to the death and never give in. After more than 60 days, the little crocodile hatched. Half a year later, the little crocodile left its mother and began to live independently.
45. Will crocodiles devour their cubs?
A: Yes, in fact, when young crocodiles hatch from crocodile eggs, the female crocodiles swallow them in their mouths, put them in a bag under their chin, and then spit them in a nearby pond. Because the crocodile's mouth is very long, when it opens its mouth, it can't see the scenery in front. When observing food, it will swallow all the prey in front of it, sometimes including its own baby.
46. What are the characteristics of birds?
Answer: the characteristics of birds: first, birds have feathers; Secondly, the bird's body is usually spindle-shaped, and its skeleton is not only light and hard, but also has a cavity filled with gas in the middle; Third, the forelimbs of birds have evolved into wings, which are suitable for flying; Fourth, the respiratory organs of birds can make about 75% of the inhalation bypass the lungs and store it in the airbag; Fifth, birds belong to warm-blooded animals. In addition, the bird's heart has two ears and ventricles, which is roughly the same as that of mammals.
47. What is the secret of homing pigeons' long journey home?
A: After research, scientists have put forward many explanations. First of all, pigeons have the ability to identify celestial bodies, and can rely on the sun and stars to identify directions and geographical locations. Second, there is a protrusion between pigeons' eyes, which, like a compass, can measure the changes of the earth's magnetic field and point out the direction for pigeons. Thirdly, the strong sunspots of the sun, cosmic rays and meteorological conditions will also affect the homing pigeon's sense of direction. Despite the inconsistency, there is no doubt about the pigeon's ability.
48. What's the matter with the Bird's Nest?
A: In fact, bird's nest is made up of mucus secreted by Jin Siyan's submandibular gland. What started out as a silky substance soon dried up and became tough and elastic. "Supplement to Compendium of Materia Medica" records that bird's nest "is sweet and flat in taste, nourishing lung yin, resolving phlegm and relieving cough, and supplementing it with clear water, which is the holy medicine for conditioning fatigue."
49. Who will feed the little cuckoo?
Cuckoo is a parasitic bird. When a cuckoo mates, it puts its eggs in other birds' nests, and the eggs are hatched by the "landlord" until they are fed and brought back to their parents, and then fly to the south for the winter.
50. Why is the eagle eye so keen?
Answer: Because the eagle eye is located in front of the head, there are two fovea on its retina, which can accurately adjust the focal length. There are extremely dense photoreceptor cells in the central fossa, and each central fossa has 654.38 0.5 million photoreceptor cells. Because there are two central nests, the eagle can observe two objects at the same time. In addition, there are abundant blood vessels on the comb membrane, but there are no blood vessels on the retina. It relies on comb membranes to provide oxygen and nutrition. Therefore, the eagle's vision is particularly acute.
6. 100,000 why do children want to know most; Tao's common sense of life
1, the first edition is divided into five volumes of physics, chemistry, astronomy, meteorology, agriculture and physical health, with more than 900 "why". Later, three volumes of mathematics, geology and geography and animals were added.
1962 65438+ 8 volumes published in February. At this time, the first edition of "100,000 Why" received 1.484 questions, 1.05 million words. The first edition * * * printed more than 5.3 million copies. The success of a hundred thousand whys lies in the word "set". When planning the first edition of "100,000 Why", we noticed the supporting problems.
Step 2 introduce
One hundred thousand Why is a set of popular science books for teenagers edited and published by Children's Publishing House in the early 1960s. In the past 50 years, this set of books has been published in six editions, and the cumulative circulation has exceeded 1 100 million copies. It is a scientific enlightenment book for several generations of young people in New China, and has become the first brand of original popular science books in China. It has played an active role in spreading knowledge and popularizing science, and has influenced generations of young people to embark on the road of science. Influenced by it, books with the title of "100,000 Why" emerge in an endless stream, becoming synonymous with children's popular science books.
7. Find 100000 knowledge summaries of why (one is no more than 20 words,10).
We always meet some strange problems in our life. If we ask our parents, they can't tell us. However, "100,000 whys" can always solve these puzzles.
This book introduces the mysterious universe, beautiful nature, interesting plants, lovely animals, wonderful human body, health secrets, science, magical technology and colorful culture around me, which all help me to know the world and form a good habit of thinking and exploring.
From mystery of the universe, I learned that we are not the only celestial bodies in the solar system, but also mercury, Mars, Venus, Saturn, Jupiter, Pluto, Neptune and Uranus. We also know that except Mercury and Venus, all nine planets have satellites.
Want to know why leaves turn yellow in autumn? Tell you what! Leaves are green because they contain chlorophyll. In addition to chlorophyll, there are anthocyanins, lutein and other pigments in leaves. Usually, the content of these pigments in leaves is very small, so the green of leaves is all due to chlorophyll. However, after entering autumn, the weather became cold. At low temperature, chlorophyll will be destroyed, but lutein will not be affected, so the leaves will be yellow with lutein! This is the answer I got in "Interesting Plants"!
"100,000 Why" made me understand a lot. That is a silent teacher who brings me a lot of knowledge! Gorky once said: "Books are the ladder of human progress." Yes! A hundred thousand whys is a good example! This is a book related to science. It is also related to mathematics in our life, but I am curious and want to finish reading this book. Unfortunately, the time was too short, and I only saw part of it. In this book, what I am interested in is "Why all beehives are hexagonal". After reading the topic, I thought the hive was round. Why are they all hexagonal? I took the question and read it carefully. Reading and thinking remind me of the real hive in reality. It looks neat from the front or side, but the hexagonal honeycomb does have certain scientific nature. There is a French scientist, "Urah", who measured it at the beginning of18th century. He told us a rule, that is, beehives. The obtuse angle of each diamond is 109 28' (pronounced as 109 28), but what is the secret? Because of the calculation, the result is exactly the same as the angle of the honeycomb, which is stable, but it is too different from the circle we guessed.
Only time is the only criterion for testing truth.
8. Athena Chu Edition: 100,000 Why Primary School Students Must Know (
Reflections on "100,000 Why Students Want to Know Most" This book is one of the new classic children's color bookstores published by Dalian University of Technology Press, and it is the designated bibliography of the new curriculum standard.
Full-color pinyin version, more suitable for lower grade children to read. What I got was "Why do 100,000 primary school students want to know the essence of the universe the most", from astronomical phenomena such as the moon, stars, the internal structure and composition of the earth to natural phenomena such as why there are spring, summer, autumn and winter, earthquakes, the formation of coal, questions about the ocean and why there is a rainy season.
The book is color-printed, illustrated and equipped with pinyin. When parents don't have time to read to their children, they can let them read by themselves, but the taste of this book is really a bit strong, so we must cool down. Or maybe I'm sensitive to this.
The content is also very rich, not a simple and rigid introduction, just like why the stars come out at night. At first, children are familiar with "the stars in the sky are shining like many small eyes." My sister looked up and counted the stars, and the stars were bright. " One two three four five six. "
The star is described at the beginning, and then the question is introduced. Why do stars appear at night? Later, the answer is given in the book. In fact, the stars always exist, always in the air, only during the day, because the strong sunlight covers those weak starlight, and we can't see them. Only at night, when the sun goes down, can they be revealed. At the same time, it is equipped with a beautiful map of the starry sky, which makes you want to find a place to see the stars.
The children dragged me to talk, but this kind of book, which is mainly written in words, is really sad and tired to talk about. There is also a knowledge kingdom after each question, which further expands the knowledge.
A very good book. Now I don't have to scratch my head in the face of a hundred thousand children. When I was a child, I always liked to ask my parents all kinds of strange questions. Why did the sun rise in the east and set in the west? Why there is day and night; Why is the moon sometimes round like a jade plate and sometimes curved like a sickle? Sometimes the sun is shining, sometimes it rains ... In the face of my strange questions, my parents can't answer them, and my curiosity is always unsatisfied.
Now whenever I am curious, I stop asking my parents, but go to my second teacher, that is, "100,000 whys" and "100,000 whys" to help me solve many problems. It brought me into the mysterious world of science. In this mysterious scientific world, I have learned a lot of knowledge and solved many mysteries of life.
From "100,000 Why", I learned not to be picky about food, because children need all kinds of nutrition when they grow up. Not every food has all kinds of nutrition, some have more of this kind, some have more of that kind, some lack this kind of nutrition, and some lack that kind of nutrition. Only by not being picky about food can we strengthen our physique. The book "100,000 Why" made me understand a lot. It is a silent teacher who gives us endless knowledge, lets us know the development of science, and lets you feel the colorful world and the ever-changing nature.
On Saturday afternoon, I went to the bookstore and bought a set of books: 100,000 Why. After returning home, I opened the wrapping paper, opened the book carefully with curiosity and began to read carefully.
This set of books contains knowledge of animal kingdom, botanical garden, encyclopedia of life, geography and meteorology, human mysteries and so on. The knowledge in the book is not all dense words, words and cartoons as I imagined.
Beautiful! Why is the elephant's nose so long? Why do people age so fast in space? Can plants catch a cold and have a fever? These questions can't be answered in Chinese books, but I found them in the book "100,000 Why". In this set of books, illustrated, vivid and interesting, can not only help us broaden our horizons and learn more knowledge, but also improve our quality and success.
This is really my silent little teacher! After reading this set of "100,000 Why", it reminds me of Gorky's words: books are the ladder of human progress. This sentence is so right! At the same time, I also deeply appreciate the greatness of scientists. They have developed rich scientific and technological achievements with their own wisdom and strength, which is really admirable! Finally, I understand a big truth: knowledge can never be learned, and if you want to learn more, you have to pay more.
I must be a careful and thoughtful student in the future, observe things around me carefully and master more knowledge.