We live on a beautiful blue planet, and there are so many beautiful creatures on this planet. The complicated relationship between creatures on this planet makes this planet more colorful. When I was a child, I often looked at the beautiful sky on the balcony less than 10 square meter and muttered to myself. How big is the world? These seemingly simple questions have been with me ever since. At that time, I always leaned in my parents' arms and thought that a strong father was the whole world, and I was the happiest person. Now, I have grown up, broadened my horizons and learned more, but the questions that accompany me have never been answered. Until one day, when I was cleaning the bookcase, I found a cartoon. My brother suddenly wants to read a book, and one of them is a familiar frog in the well. My brother laughed at the frog, but I was lost in thought. That frog is very similar to me, always immersed in a narrow self-world, but did not explore the problems I wanted to know. Because of this, I didn't know the world widely and didn't see its mystery and beauty. From then on, I fell in love with reading. Because reading can let me know something I don't know, so that. I also fell in love with travel, which relaxed my mood and made me understand the legend of life and the joy of life. It let me know the beauty of the world and let me know this colorful world again. It turns out that my childhood problems seem to be suddenly enlightened. I still remember that when I read the history of the world, I was surprised by the changes over thousands of years. I still remember that when I visited the great rivers and mountains of my motherland, I never felt that kind of surprise. The world is big, and there is no wonder. Only those who are willing can feel its pride. The world is so vast, there are still many mysteries waiting for us to solve. They call on us and inspire us to realize our dreams and the world in the near future.
2. Encyclopedia of first-year scientific knowledge
Small scientific knowledge
1. Rabbits beat the ground with their legs to send messages. Most of them beat the ground with their hind legs, which is a way for them to express their feelings to the female rabbits.
2. The biggest monkey in the world is a baboon and the smallest monkey is a bonobo.
3. The real name of "Four Elephants" is Elk, which is a rare animal in China.
4. 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.
5. Why do sunflowers always face the sun?
Sunflower stems contain a wonderful auxin. This auxin is very afraid of light. When it is illuminated, it will go to the backlight side, and the cells on the backlight side will multiply rapidly. Therefore, the backlit side will grow faster than the bright side, which will bend the sunflower to light.
3. A small heart makes a big world. Combination 600
My little world is nothing special. A spacious bed, two bedside tables, a desk, a bathroom and a window for the coming year. This is my little world.
bed
At night, at nine or eight o'clock, I went to bed. This bed is soft and elastic. I feel very comfortable and relaxed as soon as I lie down. In this way, I spent the night lying on it. The next day, I played trampoline as soon as I got up. The "Dangdang Dangdang" bed cried happily, and I felt like flying. The bed dragged me down, and when I jumped, the bed dragged me down. I wanted to jump, and the bed pulled me down. In a word, we are inseparable anyway.
bedside cupboard
The bedside tables are placed on both sides of the bed. There is a piece of glass on it and two small drawers at the bottom, one for socks and the other for gadgets.
I used to look at the alarm clock next to me every time I got up. "Oh, get up at seven." Say that finish, I get dressed, fold the quilt, and then brush my teeth and wash my face. Say that finish, I took out a pair of socks from the cupboard, opened my feet and put on socks. I have the habit of picking up the telephone beside the cabinet and starting dialing. I like this life best, this life is free and happy!
desk
There are some books, an alarm clock, some pens and a millet on the table, which make up a table.
Every morning when I come together, I will open a book, lie lazily in the chair and read with relish. My eyes shine and my tongue rolls up from time to time. Sitting at a desk reading, there is endless joy, knowledge is rolling in, and everything is easy. Sitting there, pen in hand, writing a composition, inspiration pouring out constantly, doing homework, and getting good grades in all subjects. Read and enjoy endless happiness. Painting hafnium is vivid.
In short, you can have whatever you want and do whatever you want.
This is my little world, you say, can I be unhappy? You say, can I not be happy? You say, can I not be proud? A big bed, two bedside tables, a table, a bathroom and two windows!
Ha, this is my little world!
4. 50 little scientific knowledge around you
Science is everywhere. Here are 50 scientific tips 1.
Why do you see lightning first and then hear thunder? Light waves travel faster in air than sound speed by 2. Who was the first Olympic champion in China? Xu Haifeng III.
Who invented glasses? Roger? Bacon 4. Why does the bicycle move? Bicycle tires rub against the ground.
Whose title is the following? Poet Fairy-Li Bai, Poet Saint-Du Fu,-Li He, Poet Bone-Chen Ziang, Poet Crazy-He 6. What does the moon revolve around? How long does it take to make a revolution? Earth, 27.32 days 7.
What are the three plains in China? Northeast Plain, North China Plain, Middle and Lower Reaches of the Yangtze River Plain. How many earthquakes are there on the earth every year? About 5 million times.
What is the smallest and coldest star in the solar system? Pluto 10. What is the thickness of the earth? Atmosphere 1 1.
Why are there black boxes on the plane? It is used to record all kinds of situations on the plane during the crash and help people understand the cause of the accident. What are the customs during the Spring Festival? Sweep the house, set off firecrackers, put up Spring Festival couplets, eat New Year's Eve, etc. 13.
What animal can predict earthquakes? Cattle, horses, rabbits, chickens, ducks, dogs, snakes, rats, fish, etc. What plant blooms first and leaves later? Chimonanthus praecox, kapok, forsythia suspensa, peach tree, winter jasmine, pear tree, silver willow, bauhinia, Xiang Jie, Lycoris radiata and plum blossom 15.
How do bees make hives? Every worker bee has a wax gland at the waist, which can secrete wax. This wax becomes soft and tough after chewing in the mouth, and can be used to build a honeycomb. Why is the medicine bottle so light? Because light color can reflect light, dark color absorbs more light when exposed to sunlight, so drugs are easy to deteriorate.
Who invented the steam engine? Watt 18. Which dinosaur is the hardest? Stegosaurus 19.
What is the blood of the earth? Magma 20. What is the skeleton of the earth? Rock 2 1
Why not watch welding sparks? It contains ultraviolet rays harmful to the eyes. Why can't you turn off the lights and watch TV? The screen and image of TV are relatively small. In the dark, the vision should be highly concentrated and expanded, and it is particularly sensitive to the strong reflection of light on the TV screen, which will make the eyes suffer from * * * and the vision will drop by 23%.
Who are the top ten marshals of China people? Zhu De, Peng, He Long, Chen Yi, Liu Bocheng, Luo Ronghuan, Xu, Nie, Lin Biao, ** 24. Write down the dynasties in ancient China in order. Xia, Shang, Zhou, Qin, Han, Sui, Tang, Song, Yuan, Ming and Qing 25.
Why don't rabbits need water? Because the rabbit's staple food vegetables contain a lot of water, which is enough for the body. If there is more water in the intestine, you will get gastroenteritis. But rabbits can drink water when they are short of water.
What is a meteor? It refers to meteoroids running in interstellar space (usually including cosmic dust particles and solid blocks), which are attracted by the earth due to the perturbation of the earth's gravity when approaching the earth, and then enter the earth's atmosphere and burn with it. List some outstanding astronomers in the history of China.
Zhang Heng and his party, Guo Shoujing and Li, 28 people. Who is the inventor of the battery? Volt 29.
Where is Mount Vesuvius? Italy. 1 who are the two astronauts who arrived at the moon? Armstrong and Aldrin 3 1.
Which province and city is Mount Tai in? Taishan City, Shandong Province 32. Which countries does the Amazon River flow through? Brazil, Peru and Colombia.
Which countries does the Irrawaddy River flow through? China, Myanmar. What are the five most precious gems in the world? Diamonds, sapphires, rubies, emeralds and opals.
What was the name of the ancestor of the fish? Amphioxus 37 What kind of fish glows? Ankang fish, snapper, dragon head fish, naked eye fish, etc.
How many muscles does a person have? A * * * has more than 600 muscles. Will all the wood float on the water? No, there is a kind of "steel tree" that won't float on the water.
What is the biggest flower? Dawanghua 4 1. Who invented anesthesia? Hua tuo 42.
What is the capital of France? Paris 43. What is the capital of England? London 44.
What is the capital of Japan? Tokyo 45. What is the capital of Italy? Rome 46.
What is the capital of the United States? 47 Washington. What bird is one of the ancestors of birds? Archaeopteryx 48.
What are the four seafood products in China? Pseudosciaena crocea, Pseudosciaena crocea, hairtail, squid. What is the largest mammal? Blue whale 50.
What is the largest amphibian? giant salamander
5. What little scientific knowledge do you have?
Universe technology
Visible light, ultraviolet light and infrared light
The largest mass of the eight planets is
Jupiter
What is the largest freshwater lake in China?
Poyang Lake (in Jiangxi Province)
The head of the five mountains is
Mount Tai
Rotate around the earth axis passing through the north and south poles, and the direction is from west to east. The farther away from the poles, the higher the speed.
big
What is the largest mammal in the world?
blue whale
Which city is called the foggy capital of the world?
London
What is the main energy source in 2 1 century?
Solar energy/solar energy
Known as the windmill power generation kingdom is
Denmark
What kind of pollution is called the best killer in the world?
water pollution
What is the closest planet to the sun?
mercury
Which country is Greenwich Observatory located in?
Britain, England
Dry ice is
carbon dioxide
China was invented by Bi Sheng in the Northern Song Dynasty.
relief printing
Why is China a land power and a maritime power?
With a vast territory of 9.6 million square kilometers, China is the largest country in Asia and one of the largest countries in the world, ranking third in the world after Russian and Canadian countries. The coastline of Chinese mainland starts from the mouth of Yalu River in the north and ends at the mouth of Beilun River in the south, with a total length of18,000 kilometers and an island coastline of more than 32,000 kilometers. There are more than 6,500 islands; According to the relevant provisions of the United Nations Convention on the Law of the Sea and China's proposition, the sea area under the jurisdiction of China is about 3 million square kilometers. China has vast sea areas and abundant resources, so China is also a maritime power.
Why is space junk so harmful?
They have become potential killers of satellites and orbiting space stations, seriously threatening the safety of astronauts. You know, space junk runs at the speed of the universe. An oncoming metal particle with a diameter of 0.5 mm is enough to pierce the sealed flight suit; Dust that people can't distinguish with the naked eye (such as paint chips and paint powder) can also kill astronauts; A fragment the size of an aspirin tablet can "paralyze" a satellite and send a spacecraft costing hundreds of millions of dollars into a dead end. Because of the huge amount of tiny space debris, it will seriously change the surface performance of spacecraft; Slightly larger space debris will damage the surface materials of spacecraft, cause impact pits and damage surface devices; The high-speed impact of space debris will vaporize itself and the surface material of the spacecraft being hit into plasma clouds, which will eventually lead to the failure of the spacecraft.
Interesting technology
Once, Newton was so absorbed in doing experiments in the laboratory that he forgot the time for eating. His assistant took some eggs and sent them to the laboratory. He said to Newton, "Here are some eggs. Do it yourself. " Newton said, "OK, thank you. Please put the eggs there. " After that, he immersed himself in the experiment.
After a long time, Newton was hungry and remembered that he hadn't had lunch yet. So, he took a small pot, put the eggs in the pot, put them on the stove, and began to do experiments again.
Half an hour later, Newton finished the experiment. At this moment, he remembered the eggs in the pot. He opened the lid and found there were no eggs in it, only a pocket watch.
Newton was surprised and looked up. The eggs are still on the table, but the pocket watch on the table is missing. It turned out that Newton was absorbed in the experiment and cooked the pocket watch as an egg.
1, who knows how the sea freezes? Everyone thinks that the sea water is salty and won't freeze. In fact, after the temperature is lowered, the solubility of water will also decrease, that is, salt will be precipitated. In this way, the water freezes.
2. Who knows if Altair has it now? What we are seeing now is the "light" it gave off a long time ago. As for whether it exists now, only people in the Altair galaxy know that the light we observe from the earth is still the light from a stable star. Moreover, the average life span of stars is over 6 billion years, so Altair should still exist now.
6. What are the health tips?
Life and health tips spring health tips 1. Health tips: Go to bed early and get up early every day to ensure a certain amount of sleep.
Second, strengthen exercise. After getting up every day, stick to the fresh air for early exercise. Perseverance can make you energetic and refreshed.
Third, breakfast health tips should eat more calories to develop the habit of eating the most calorie food every morning, in order to supply enough calories to the human body. Fourth, a balanced diet with health tips.
Eat more foods rich in high-quality protein to meet the growing demand of protein for vigorous metabolism in spring. Five, health tips to eat something slightly spicy, such as onions, ginger, leeks, garlic and so on. ; Diet should be light, greasy dishes will make people tired after meals.
Sixth, eat more yellow-green vegetables such as carrots, spinach, pumpkins, tomatoes, green peppers and celery. , rich in vitamin A, has the function of protecting and enhancing upper respiratory mucosa and epithelial cells of respiratory organs. Seventh, chronic bronchitis and bronchitis have health tips, and they are easy to attack in spring. Health tips: Eat more foods that eliminate phlegm, strengthen the spleen, tonify the kidney and moisten the lungs. Such as loquat, pear, walnut, honey and so on. Helps to relieve symptoms.
Eight, health tips Eating fresh fruits and vegetables can not only neutralize acidic products in the body, but also supplement vitamins. For example, raisins, oranges, bananas and apples are all rich in this mineral.
Top ten junk food and health tips in the world: 1. Fried food with health tips; 2. Pickled food; 3. Processed meat food with health tips (dried meat, floss, sausage, etc.). ); 4 biscuits (excluding low-temperature baking and graham crackers); 5. Soft drinks and cola foods with health tips; 6. Convenience food (mainly instant noodles and puffed food); 7. Canned food with health tips (including fish and sausages)