The content of "One Hundred Thousand Why Are Children" includes: animal encyclopedia, life encyclopedia, plant encyclopedia and nature encyclopedia.
100,000 Why Children ([1]): Why do dogs have a particularly sensitive nose, why do dogs like to wag their tails, why do cats sleep during the day and catch mice at night, why do white rabbits have red eyes, why do ducks wag their tails when they walk, why do donkeys like to roll on the ground, why do cows chew and don't eat, why do horses sleep standing up, why are pigs so stupid and why do geckos break their tails. Why can the gecko "fly over the eaves", why can the chameleon change color, why can the snake swallow something much bigger than its own head, why can the rattlesnake's tail ring, why the bat is the champion of hearing, and why do the geese queue up when flying? ...
2. Why should children's 100,000 little knowledge be popularized?
1. Why do the stars twinkle? We see stars flicker, not because the luminosity of the star itself changes, but because of the occlusion of the atmosphere.
? The atmosphere is between us and the stars. When starlight passes through the atmosphere, it will be affected by the density and thickness of the atmosphere. The atmosphere is not absolutely transparent, and its transparency will change according to its density.
So when we look at the stars through it on the ground, we will see that the stars seem to be flashing. 2. Why do sunflowers always face the sun? There is a substance called "auxin" in the stem under the sunflower disk.
This substance has the function of accelerating replication, but it is anti-optical, and it will run to the backlight side whenever it encounters light. ? So when the sun rises, the stem of the sunflower immediately hides to the side of the backlight, as if the whole plant is bent in the direction of the sun.
3. Why do fireflies glow? Fireflies emit light because there is a luminous body at the end of their abdomen, which is filled with a lot of phosphorus-containing luminescent substances and luminescent enzymes, so that fireflies can emit flashing light. ? The purpose of fireflies is not only lighting, but also courtship, vigilance and trapping.
This is also a communication tool for them. Different kinds of fireflies emit light in different ways, frequencies and colors, so they can convey different information. 4. Why is the squirrel's tail so big? Don't underestimate the squirrel's tail! When the squirrel jumps around the tree, its tail plays a great role.
It can keep balance when the squirrel jumps to the tree to avoid falling and being injured. In addition, this big tail can play a more protective role in winter, tightly surrounding the squirrel's body, which is convenient and practical.
? 5. Why is the sea mostly blue and green? Looking at the sea, it is often found that the sea water is blue-green. However, when you pick up the sea water, you can only see it as transparent and colorless as old water.
? It turns out that the seawater itself is not much different from the water we touch every day, and it is also transparent. The green we see is actually a phenomenon caused by the ability of seawater to absorb light.
Only green light can be absorbed and reflected by seawater; When the seawater is deep, the green light is also absorbed, and the seawater looks blue. 6. Why do leaves change color? The reason why leaves change color is related to the chemical substance chlorophyll.
? When autumn comes, the days are shorter and the temperature is lower than that in summer, so the leaves stop producing chlorophyll, and the remaining nutrients are transported to the trunk and roots for storage. Leaves lack green chlorophyll and other chemical pigments appear at the same time, so we often see yellow and brown leaves.
7. Why does sorbet get angry? The reason why sorbet bubbles is because there is a lot of invisible water vapor in the outside air. When it comes to cold sorbet, it will liquefy into droplets when it is cold. It seems that the sorbet is bubbling. 8. Why do cicadas shed their skin? The shell (exoskeleton) of a cicada.
3. One hundred thousand reasons for early childhood education.
Why does the wound heal automatically?
Once the skin is cut or scratched, the body will repair it immediately. Platelets in the body will immediately rush up and block the blood under the surface of the skin.
The pipeline is broken. Platelets thicken the blood until it coagulates and plugs the leak. 100 thousand why children's edition
The bleeding stopped and coagulated.
The solid blood clot will gradually become a hard scab. After a period of time, the scab will fall off on its own. New skin cells grow from under the scab.
The new skin looks pink at first, and the color will gradually darken after scabbing.
Why do children's hearts beat faster than adults?
The younger a person is, the faster his heart beats. such as
：
The baby jumps every minute.
180
Second,
10
/kloc-children aged 0/8 are jumping every minute.
90
Second, adults.
everywhere
70
About time. Why?
It turns out that the child is in the stage of growth and development, with a large amount of activity and needs enough.
Oxygen and conservation. In this way, in order to meet the needs, the heart will beat faster and carry a lot of fresh through large and small arteries.
Oxygen and blood of various nutrients are delivered to various organs of the body to supply various nutrients needed by the body.
How long does it take for the heart to beat once?
?
Every beat of the heart takes about
0.8
Seconds, in which atrial contraction
0. 1
Seconds while relaxing to use.
0.7
Seconds; Ventricular contraction
0.3
Time to relax
0.5
second
Why are lips red?
The face is a very important part of the human body, and all the five senses of people grow on the face. There are a lot of blood vessels in these parts, and blood flows in them.
The lips are the most sensitive and soft part of the face, so there are many blood vessels on the lips. The skin of the lips is particularly thin and transparent.
Yes, so that the bright red blood under the skin can seep out and make the lips look red.
Why does the human body feel?
The human brain is always receiving all kinds of information from inside and outside the body and responding to it, so you will
Have feelings. All information is passed through a specific
"
path
"——
Neural network is transmitted to the human brain.
How many feelings do people have?
?
Besides sight and smell, the human body has many other sensory organs. For example, the tongue has a sense of taste and the ear has a feeling.
Whether the human body maintains organ balance, whether the skin surface has a sense of touch, and can feel cold, hot and itchy.
Why are you talking in your dream?
The human brain is made up of many nerve cells, and these nerve cells have different division of labor, some are responsible for sports and some are responsible for language. mankind
When sleeping, the brain begins to rest, but some nerve cells may not rest because of lack of sleep.
Excited state. If the nerve part responsible for language is excited, people will talk in their sleep.
4. 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.
5. Why do 100,000 children have physical geography?
Children's 100,000 Why (American Illustrated Edition) is an encyclopedia series for children aged 3-6, based on the traditional form of 100,000 Why.
"100,000 Why Children" (American Illustrated Edition) is divided into ten volumes: nature and geography, insect world, birds and marine animals, interesting science, wonderful world, plant paradise, interesting people, the world around us, mammals and ancient discoveries.
"Children's 100,000 Why" (American Illustrated Edition) easily explains popular science knowledge in lively language, which is very easy for children to accept and it is not difficult for parents to explain.
The illustrations in Children's 100,000 Why (Beautiful Picture Edition) are all hand-painted and realistic in style, which is a rare work of sincerity. The images in the picture are lifelike, whether it is people or animals, natural wonders or interstellar wonders. Parents don't have to worry about misleading their children who are studying.
There are also a large number of exploded diagrams in "100,000 Why Children" (beautiful picture edition), which show children the principle, micro and scientific spirit and guide them to actively explore.