I don't know if I didn't see it, but I was shocked when I saw it. It turns out that there are endless mysteries and wonders in popular science books, which attracted me at once. I turned a blind eye to "why" one by one, and suddenly became interested in scientific knowledge: why can electrical signals travel far away? Why can the refrigerator refrigerate? Why can missiles fly far? Wait a minute. Among them, I am most interested in what containers are used in microwave ovens. I took a curious look, oh! It turns out that microwaves don't like the company of metals, so they use microwave ovens to heat food instead of metal containers. What surprises me even more is how many robots there are in the world: at present, there are more than 600 thousand robots in the world, of which Japan has the largest number! I think it is great that they have developed so many functional robots, which can replace human beings to complete many tasks that human beings can't do, and provide great convenience for our human life and work.
It turns out that there are so many "why" in life that I don't know, but I never care. Today's reading opened a door to scientific inquiry for me. Today's reading ignited the fire of "being diligent and asking questions". Today's reading has sown the seeds that I should learn more and use more science since I was a child. Because there are endless "why" waiting for us to discover and explore. So now we should study hard, think hard and ask questions well, so as to provide first-class technology for mankind and benefit everyone in the future.
I want to thank this science and technology festival, because it makes me understand that I should study hard and learn more new knowledge!
I have heard many strange things, but I have never seen so many strange tree species. In fact, there are many strange trees on our earth that we don't know at ordinary times. Next, I will tell you the story of those strange tree species.
First of all, I want to introduce you to a tree that laughs during the day and cries at night. It's called "Different Nalty". It lives in Brazil, and the tree will keep giving out euphemistic laughter during the day; At night, it will constantly make a sad and low sob. Some botanists believe that this kind of tree makes different sounds day and night, which is closely related to sunlight.
In the United States, there is a tree called "Golden Tree", which is a fir tree with high gold content. It absorbs gold from the ground with roots and then transports it to bark and leaves. People can use gold pots and sulfur ore tanks to extract gold from trees.
A tree named "Vegetable", formerly known as "Kakalannier", grows in Indonesia and Malaysia. The height of the tree is 8 to 15 meters, and the fruit is large and slightly sour. It can be used as a cold and refreshing drink, or fried.
Not only trees but also many strange plants in the world. Like a mimosa, as long as you touch it, it will shrink its leaves like a shy little sister; Another example is tickling grass: if you accidentally touch it slightly, it will tickle you immediately, and you will feel a sudden itch, which will make you scratch your ears. ...
Strange Tree made me understand that there are many strange and incredible things in this world, among which there are many scientific reasons. As long as we study hard, observe carefully and think seriously, we will find the mystery in things.
I read the book China Children's Encyclopedia Science Adventure, and I know the origin of life.
This was discovered by American scientist Mr. stanley miller. It was in his special greenhouse that he discovered several amino acids of life. Therefore, Mr. stanley miller speculated that the universe was turbid 4.6 billion years ago, and the universe was formed after the Big Bang, and then the earth was formed. The early earth experienced Precambrian, Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Permian, Triassic, Jurassic, Cretaceous, Tertiary and Quaternary ... There is a scientific view that about 500 million years ago, there were nitrogen, carbon dioxide, methane, ammonia and organic molecules in the ocean, and these substances accumulated to become organisms. Scientists have found cyanobacteria in fresh water. According to fossils, cyanobacteria is the earliest life form on earth.
After reading these materials, I understand that there are still many unsolved mysteries on earth, all because these great scientists have made careful observations and are good at exploring. So from now on, I will study hard and take everything seriously, so that when I grow up, I can explore the mysteries of the earth.
The great poet Goethe once said, "Reading a good book is like talking to a noble person." Yes! A good book will benefit us a lot. Super Encyclopedia makes me like talking with noble people.
The Super Encyclopedia has 16 books, covering topics such as the universe, world geography, history, culture, mathematics, future science, animals, insects, plants, human body, weather, ocean, exploration, invention, war, etc. The biggest feature of this book is that every content has humorous cartoons, which decompose knowledge points and guide us to understand the theme in depth.
I read one of the books today, super strange human secrets. From the book, I know that our bodies are made up of such tiny things as cells. Cells are composed of cell membrane, cytoplasm, Golgi apparatus and centriole. Our body has more than 200 bones, which are made up of living cells and minerals. If our bones are broken, we can connect them with plaster casts. Gypsum is used to prevent broken bones from moving during healing and causing dislocation. I also know that AIDS, a terrible plague of human beings, can spread through the blood of infected people, but not through saliva or skin contact. For monkeys in African forests, HIV infection is as common as a cold. You must feel a little incredible after reading it!
Dear friend, after listening to my introduction, do you think you will see it soon? There are still many unknown areas in our bodies waiting for us to explore and discover.
This is the story of a boy and a girl. Boys are called bronze and girls are called sunflowers. A special opportunity, the city girl Sunflower and the rural boy Bronze become brothers and sisters. They lived together and grew up together. 12 years old, fate recalled the girl sunflower to her city. From then on, the boy bronze often looked at the end of the reed and the place where the girl sunflower was.
The content of this book is very touching. Sunflower was adopted by the bronze family because her only relative, her father, died. The bronze family took good care of her, just like their own daughter. Bronze also weaves necklaces for sunflowers when sending them to school and performing every day, just like brothers and sisters.
Under the care of the bronze family, the sunflower grew up and became sensible. When she was 12 years old, bad luck came and everyone in the city wanted to get the sunflower back! Don't say it's a bronze house, even the sunflower doesn't want to go back. At the strong request of the city people, the sunflower got on the boat and came to the city by the river. ...
Since the sunflower left, Bronze often sat on the haystack and looked at the end of the reed and where the sunflower was.
One day, bronze was sitting on a big haystack as usual, and suddenly he found a man coming towards it from the reeds. He looked at it carefully, as if it were a girl, and then looked at it carefully, ah! It's a sunflower! Bronze hurried down from the haystack and ran towards the sunflower, shouting, "Sunflowers … flowers …" However, who knew that after a fire in the village, Bronze became a dumb child.
After reading this book, my mother and I were deeply moved by their pure brother-sister friendship.