Interesting knowledge, popular science 1. Interesting scientific knowledge
In a science class, the teacher told us about ants. The teacher left us a question: Why don't ants get lost? Let's have a look.
So I borrowed some books from the library to consult. The book says that after ants leave their nests and reach their destinations, they will leave some smells along the way, return to their nests, touch each other with their tentacles and inform other ants. Do I think ants are really that smart?
In order to confirm this conclusion, I am going to try it myself. I first prepared a small stick and put a bait-small candy at one end of the stick. I put this device near an ant nest. After a while, an ant came out to explore the road. After I led him to the stick, he went to the place where the candy was put, stopped to touch it with his tentacles, and stopped as if he were smelling it. I quickly cut off a part of the stick. When the ant came back, it turned left and right where it was cut off, but it couldn't find its way home. After a while, I repeated the experiment again, and the ants still didn't find their way home.
I am so happy, haha! I finally understand why ants don't get lost. It turns out that they can tell the direction by smell.
I want to know some interesting scientific knowledge.
The English word "queue" has the same pronunciation after removing the last four letters.
Beetles taste like apples, wasps taste like pine cones and earthworms taste like bacon. ● The word "set" is the most frequently explained word in English.
In English-speaking countries, the word "French kiss" has the same meaning as the French proverb "English kiss". "Almost" is the longest word in alphabetical order (A, B, C … in order).
"Rhythm" is the longest word without vowels (not by, just a short dot). ● 1386, a French pig was sentenced to hang for murdering a child (probably eaten, which happened in India two days ago).
● A cockroach can live for several weeks after its head is cut off! The human thigh bone is stronger than concrete. You can't strangle yourself with your hands.
You can try. Every continent has a city called Rome. In Iceland, it is illegal to keep a pet dog.
Your heart beats 654.38+ million times a day. Horatio nelson was an outstanding British admiral, but his seasickness accompanied him all his life.
(Dizzy) ● Jeremy Bentham's remains appear in every major meeting of London University. Right-handed people live an average of 9 years longer than left-handed people.
(Fortunately, you are not left-handed) ● Your ribs move 5 million times a year, and every breath fluctuates. Elephants are the only mammals that can't jump.
A quarter of your bones are concentrated on your feet. (Feet are quite complicated) ● Like fingerprints, everyone's "tongue lines" are different.
● The first blood transfusion in the world began at 1667, when two pints of sheep blood were given to a young man. ● Fingernails grow three times faster than toenails.
● The most dusty thing in your room is the dead skin you dropped. ● It is predicted that the world population will reach 5 billion in 2080! ● Women blink twice as fast as men.
Adolf Hitler is a vegetarian. He has only one testicle. Pure honey is the only food that won't go bad, because the honey discovered by archaeologists from the pyramids is still edible.
● If the first day of a month is Sunday, then 13 of this month must be Friday. Coca-Cola is green without pigment.
(is it eye-catching? ) ● The heart of each hedgehog beats 300 times per minute. ● The number of people who die from bee stings is higher than that from snake bites every year.
● Each pencil can draw a line 35 miles long, or write down 50,000 English words. ● More people are allergic to milk than any other food.
Camels have three eyelids to prevent them from being blinded by wind and sand. The donkey's eyes allow it to see its four feet at any time.
(Donkey's eyes are really fierce) ● The six official languages are English, French, * * *, Chinese, Russian and Spanish. "Earth" is the only planet that is not named after God.
In Nebraska, burping and sneezing are illegal. (Not so strict) ● There are 300 bones when people are born, and only 206 bones are left in adulthood.
Some insects will eat themselves if they really can't find food. (The brain is really not enough) ● Dolphins sleep with one eye open.
It is impossible to open your eyes when sneezing. ● The oldest chewing gum in the world has a history of 9000 years! ● The longest flying chicken in the world-the record is 13 seconds.
(The limit of flying chickens) ● Queen Elizabeth takes a bath every three months. There is no need for the queen to be so frugal. ) Slugs have four noses.
The owl is the only bird that can see blue. ● A man named "Charles O *** orne" has been burping for 69 years! (It's good to be alive) ● The giraffe's tongue is 2 1 inch long and can be adjusted to the ear with the tongue! On average, everyone laughs 10 times a day.
An ostrich's eyes are bigger than its brain.
I want to know some interesting scientific knowledge.
The English word "queue" has the same pronunciation after removing the last four letters.
Beetles taste like apples, wasps taste like pine cones and earthworms taste like bacon.
● The word "set" is the most frequently explained word in English. (big head)
In English-speaking countries, the word "French kiss" has the same meaning as the French word "English kiss".
"Almost" is the longest word in alphabetical order (A, B, C … in order).
"Rhythm" is the longest word without vowels (not by, just a short dot).
● 1386, a French pig was sentenced to hang for murdering a child (probably eaten, which happened in India two days ago).
● A cockroach can live for several weeks after its head is cut off!
The human thigh bone is stronger than concrete.
You can't strangle yourself with your hands. (You can try)
Every continent has a city called Rome. (It's really all roads lead to Rome)
● It is illegal to keep a pet dog in Iceland.
Your heart beats 654.38+ million times a day.
Horatio nelson was an outstanding British admiral, but his seasickness accompanied him all his life. (dizzy)
Jeremy Bentham's remains appeared at every major conference of London University.
Right-handed people live an average of 9 years longer than left-handed people. (fortunately, not left-handed)
● Your ribs move 5 million times a year, and each breath will fluctuate.
Elephants are the only mammals that can't jump.
A quarter of your bones are concentrated on your feet. (The feet are quite complicated)
Like fingerprints, everyone's "tongue print" is different.
● The first blood transfusion in the world began at 1667, when two pints of sheep blood were given to a young man.
● Fingernails grow three times faster than toenails.
● The most dusty thing in your room is the dead skin you dropped.
● It is predicted that the world population will reach 5 billion in 2080!
● Women blink twice as fast as men. Give it a wink. )
Adolf Hitler is a vegetarian. He has only one testicle.
Pure honey is the only food that won't go bad, because the honey discovered by archaeologists from the pyramids is still edible.
● If the first day of a month is Sunday, then 13 of this month must be Friday. (It seems to be nonsense)
Coca-Cola is green without pigment. (is it eye-catching? )
Each hedgehog's heart beats 300 times a minute.
● The number of people who die from bee stings is higher than that from snake bites every year.
● Each pencil can draw a line 35 miles long, or write down 50,000 English words.
● More people are allergic to milk than any other food.
Camels have three eyelids to prevent them from being blinded by wind and sand.
The donkey's eyes allow it to see its four feet at any time. (The donkey's eyes are really fierce)
● The six official languages are English, French, * * *, Chinese, Russian and Spanish.
"Earth" is the only planet that is not named after God.
In Nebraska, burping and sneezing are illegal. (Not so strict, right? )
There are 300 bones when people are born, and there are only 206 bones left in adulthood.
Some insects will eat themselves if they really can't find food. (The brain is really not enough)
Dolphins sleep with one eye open.
It is impossible to open your eyes when sneezing.
● The oldest chewing gum in the world has a history of 9000 years!
● The longest flying chicken in the world-the record is 13 seconds. (the limit of flying chicken)
Queen Elizabeth takes a bath every three months. There is no need for the queen to be so frugal. )
Slugs have four noses.
The owl is the only bird that can see blue.
● A man named "Charles O *** orne" has been burping for 69 years! (It's good to be alive)
The giraffe's tongue is 2 1 inch long, which can be adjusted to its own ears!
On average, everyone laughs 10 times a day.
An ostrich's eyes are bigger than its brain.
4. Scientific interest knowledge
1 Why do you see lightning first and then hear thunder? (Light travels faster than sound in air) Who was the first Olympic champion in China? (Xu Haifeng) 3 Who invented glasses? (Luigi, Bacon) 4 Why does the bicycle move? (Bicycle tires rubbing the ground) 5 Whose title is below? (Poet Xian-Li Bai, poet Sheng-Du Fu, Shi Gui-Li He, landscape poet-Meng Haoran, pastoral poet-Tao Yuanming) What does June Ming revolve around? How long is a cycle? (Earth) (24 hours) 7 What are the three major plains in China? (Northeast Plain, North China Plain, Middle and Lower Reaches of the Yangtze River) 8 How many earthquakes occur on the earth every year? (About 5 million times) 9 What is the smallest and coldest star? (Pluto) 10 What is the thickness of the earth? (Atmosphere) 1 1 Why is there a black box 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. 12 What are the customs during the Spring Festival? (Sweep the house, set off explosions, post Spring Festival couplets, eat New Year's Eve, etc. ) 13 what animals can predict earthquakes? Cattle, horses, donkeys, rabbits, chickens, dogs, snakes, mice, dogs, cats, swallows, eagles, etc. ) 14 what plants bloom first and then shed leaves? (Forsythia suspensa, Winter jasmine, Chimonanthus praecox, Peach Tree and Pear Tree) 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 16 medicine bottle so light? Because light color can reflect light, dark color absorbs more light when exposed to sunlight, and drugs are easy to deteriorate) 17 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 don't you watch the welding sparks? Why can't I 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 decline. 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 what dynasties were there in ancient China? (Xia, Shang, Zhou, Qin, Han, Sui, Tang, Song, Yuan, Ming and Qing) Why don't rabbits need to drink water? Because there is a lot of water in the rabbit's staple food, it is enough for the body. If there is too much water in the intestine, you will get gastroenteritis.
But rabbits can drink water when they are short of water. What is a meteor? (refers to the light trace produced by a small solid or dust in space breaking into the earth's atmosphere) 27 Who is the outstanding astronomer in the history of China? Who is the inventor of (Rolling) 28 battery? Where is Mount Vesuvius? (Italy) 30 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 Where is the Amazon River? (Brazil) 33 Where is the Irrawaddy River? (Myanmar) 34 What are the five most precious gems in the world? (Opal, Emerald, Diamond, Sapphire, Ruby) 35 What was the name of the ancestor of this fish? What is the name of the most poisonous spider in the world? What's the name of the animal that glows in the world? (Ray and Eel) 38 Where does chocolate come from? (It is made from the seeds in the fruit of the cocoa tree) 39 Why are there "tendons" in the leaves ("tendons" can receive sunlight in Yuzryha and let the roots absorb water for the leaves) How many muscles do 40 people have? (A * * * has more than 600 muscles) 4 1 Can wood float on the water? No, there is a kind of "steel tree" that won't float on the water. What is the capital of France? What is the capital of England? Answer: London. What is the capital of Japan? Answer: Tokyo.
What is the capital of Italy? Answer: Rome. What is the capital of the United States? Answer: new york.
What are the ancestors of birds? Answer: Archaeopteryx. What are the four seafood products in China? Answer: large yellow croaker, small yellow croaker, hairtail, squid.
What is the largest mammal? Answer: blue whale. What is the largest amphibian? Answer: giant salamander.
5 1 What is the shortest-lived insect? Answer: Mayflies. What was the earliest crop? Answer: wheat.
What are the four major oil crops in China? Answer: Rape, soybean, peanut, sesame. What are the three famous wines in China? Answer: tea, cocoa, coffee.
What are the four biggest fruits in the world? Answer: apples, grapes, oranges and bananas. What is the national flower of Japan? Answer: cherry blossoms.
Where is tulip the national flower? Answer: The Netherlands. What tree eats people? Answer: Dubai.
What is the biggest flower? Answer: Dawanghua. Who got rid of China's poor oil hat? Answer: Li Siguang.
6 1 who invented anesthesia? Answer: Hua Tuo. Who invented rubber? Answer: Edison.
Who invented the missile? Answer: Qian Xuesen. What is the life span of the tortoise? Answer: 300 years old.
China is the country that produces the most tigers in the world, so what is the most precious? The answer is the Northeast Tiger. What animal was first domesticated by humans? Answer: chicken.
What is the tallest mammal? Answer: giraffe. What is the national flower of Thailand? Answer: water lilies.
What are the plants that represent peace? Answer: olive branch. What is the logo of 70UFD? Answer: UFO.
7 1 How many years can you live without watering cactus? Answer: 6 years. What blood type is camellia? Answer: O type.
Who was the first toad to breed without a grandfather? A: Zhu. Who invented the 74 plane? Answer: The Wright brothers.
What are the four major disasters in the world? Answer: mice, mosquitoes, flies, bugs. 76 won the first international gold medal for China? Answer: Wu Chuanyu.
Who was the first to predict comets? Answer: Harley. What is the homonym of Han nationality? Answer: Mandarin.
What is the book with the least population? Answer: women's books. What is the document read by hand? Answer: Braille.
8 1 What is the oldest style? Answer: Poetry. What is the smallest flowering plant in the world? The answer.
5. Little scientific knowledge
▲ What is the most on the tree? A: The largest tree in the world: it is a giant fir in California, USA.
Up to 100 m; At the height of 1.5m above the ground, the trunk circumference is 34.1m. The tallest tree in the world: Sequoia.
It was measured earlier that 1964 was 1 12m. The name is General Sherman Terry.
Third, the smallest tree in the world: the willow tree (also called grass tree) in the north is only 2 cm high. The oldest tree in the world: Cryptomeria japonica, dating back to 5200 BC, is 7 179 years old.
5. The thickest tree in the world: near Etta, Italy, it is called White Horse Tree. This tree grows 62 meters a week. 6. The oldest tree in the world: Ginkgo biloba (also known as Ginkgo biloba) existed as early as1600,000 years ago.
▲. Why can trees grow so tall? A: Because trees grow all year round, although many grasses will wither in winter, they will still grow. In addition, trees will grow as long as they are alive, and many older trees will grow very tall. ▲. Why do flowers fall at a specific time? A: The petals fall and bear fruit.
After the pistil is pollinated, the ovary at the bottom slowly expands and becomes bigger, and this branch will grow into the future fruit, but the fruit can only begin to grow after the petals fall. ▲. What are the five elements of plant life? A: The five elements of plant life are sunlight, temperature, moisture, air and nutrients, which are the lifeline of plants.
Temperature has great influence on the growth and development of plants. Plants need different and definite suitable temperatures at different growth time and development stages; Water is an important part of plants; Oxygen, nitrogen and carbon dioxide in the air have great influence on the life of plants; Plants need a variety of nutrients, including carbon, hydrogen, oxygen, nitrogen, phosphorus, potassium, calcium, sulfur, magnesium, iron and other elements 10.
▲. Why are black flowers rare? A: The color of flowers mainly depends on carotenoids and anthocyanins contained in flower cells. Black flowers are rare, and besides the pigment of flowers, they also have a lot to do with sunlight.
Flowers are tender and susceptible to high temperature, so they generally absorb less heat from blue-violet light and reflect red-orange light; If you absorb more heat from red and orange light, it is easy to get high temperature, which is why there are fewer blue and purple flowers. If a flower absorbs all the seven-color light waves, it will suffer more damage, so it is difficult to survive, so that is why there are few black flowers.
▲. What is grain? A: There are usually two kinds of sayings: one is rice, millet, millet, wheat and glutinous rice. On the other hand, millet, millet, hemp, wheat and glutinous rice.
Five of them are food crops other than marijuana. Rice, millet, millet, wheat, water bamboo and hemp are the traditional crops in China. I should not only know them, but also know their habits and origins, otherwise it will be "no matter what the grain is."
▲. Why is the lower segment of sugarcane sweeter than the upper segment? Answer: Because sugar cane needs to consume nutrients continuously during its growth. Small sugar cane is not sweet from top to bottom.
After growing up, on the one hand, the sugar produced increases, on the other hand, the nutrients consumed decrease, and the excess sugar is stored in the lower part of sugarcane. Therefore, the lower segment of mature sugarcane is sweeter than the upper segment.
In addition, because the photosynthesis of sugarcane leaves needs a lot of water, the water in sugarcane itself is mostly near the leaves, but less in the roots, so the sugar concentration in the roots is higher, so the lower part of sugarcane is sweeter than the upper part. ▲. How are green tea and black tea made? A: Black tea is made by fermentation.
Green tea is made without fermentation, but fresh tea leaves are poured into a dark red iron pot and quickly stir-fried. The chlorophyll of tea processed in this way is not destroyed and becomes green tea.
▲. Why are mimosa "shy"? Plants are often attacked by storms. Mimosa has formed a special self-protection ability in the process of long-term adaptation to the environment. As soon as it meets the first drop of rain and the first gust of wind, it closes its leaves to reduce the area damaged by the storm. ▲. Why do flowers have all kinds of colors? The color of most flowers varies between red, purple and blue.
This is because there is a "chameleon" in the petals-anthocyanin. Anthocyanins can change different colors according to the pH of the soil and the temperature of the surrounding environment.
The color of some flowers can change between yellow, orange and red because their petals contain carotene. ▲. Why are some plants poisonous? A: In the long-term unremitting struggle for existence, plants have formed various methods to protect themselves and defend against animal injuries.
Toxins are the most effective defense weapons for plants. When plants are harmed by animals, toxins can also cause fatal harm to animals.
Animals that die from eating certain plants are the best warning to other animals. They will be more careful to prevent poisoning. ▲. Why don't the seeds germinate after being cooked? Answer: Because after the seeds are cooked, the embryos responsible for absorbing water and nutrients in the body will die and the nutrients in the seeds will be destroyed, so the seeds will lose their vitality, so the cooked seeds will not germinate.
▲. Why is it not sweet when it rains more? Answer: Because melons and fruits are mainly sugar except water. If there is more rain during their growth, it will be difficult for plants to get enough sunlight, and leaves will not be able to make more sugar, so there will be less sugar stored in fruits. Without sugar, melons and fruits are not sweet.
▲. Why can leeks grow again after being cut? Answer: Because leek is a perennial plant, its root is a conical bulb, which is particularly rich in nutrients and can keep growing new leaves. After the leaves on the ground are cut off, new leaves will arch out of the soil.
▲. Why can flower arrangement and sugar prolong life? A: In the process of plant growth, through photosynthesis, plants can produce sugar to meet their own growth and flowering needs. After picking flowers, the original sugar can't meet the needs of flowering because of the thin pedicel.
Putting some sugar in a vase can make a nutrient solution, which can prolong the life of flowers. Why fruit is spherical ▲. In autumn, the trees are full of fruits: peaches, apples and walnuts.
If you are good at observing, you will find that they are all approximately spherical. Why is the fruit spherical? It is generally believed that round fruits can withstand wind and rain.
Because the shape is round, the force of wind and rain is relatively small; In addition, spherical water.
6. Interesting scientific knowledge
In a science class, the teacher told us about ants. The teacher left us a question: Why don't ants get lost? Let's have a look.
So I borrowed some books from the library to consult. The book says that after ants leave their nests and reach their destinations, they will leave some smells along the way, return to their nests, touch each other with their tentacles and inform other ants.
Do I think ants are really that smart? In order to confirm this conclusion, I am going to try it myself. I first prepared a small stick and put a bait-small candy at one end of the stick.
I put this device near an ant nest. After a while, an ant came out to explore the road.
After I led him to the stick, he went to the place where the candy was put, stopped to touch it with his tentacles, and stopped as if he were smelling it. I quickly cut off a part of the stick. When the ant came back, it turned left and right where it was cut off, but it couldn't find its way home.
After a while, I repeated the experiment again, and the ants still didn't find their way home. I am so happy, haha! I finally understand why ants don't get lost. It turns out that they can tell the direction by smell.
7. Simple scientific knowledge
We brush our teeth because there will be food residue left on our teeth, which will corrode our teeth, make them worse, cause toothache and tooth loss.
We wash our hands with soap because there are bacteria on our hands. The substances in soap can kill bacteria and protect our skin health.
Some children wear eyes because the concave lens has the function of diverging light, which enlarges the image produced by the object in front of our eyes and makes us see more clearly.
8. What are some interesting astronomical science tips?
Interesting astronomical knowledge includes light years, units of distance, the color of the sun, the planet with the highest surface temperature in the solar system, the planet with the fastest surface wind speed in the solar system and the planet with endless days in the solar system.
1, light year is a unit of distance, and light year is an astronomical large-scale unit of distance, not a unit of time. In view of the fact that the speed of light is constant in a vacuum and is not limited by inertial and reference systems, human beings regard the speed of light as an accurate unit for measuring distance, which has another meaning, because "light year" contains the word "year", and year is usually a unit of time.
A light year is the distance that light travels for one year, which is defined by the scientific community as Julian year: 365.25 years; The exact distance of such a light-year is 9460730472580800m, which is about 9.46 trillion kilometers in common parlance. At present, the farthest human probe is Voyager 1, which was launched on 1977. It is about 21600 million kilometers away from the earth, only 0.22 light years away.
2. The color of the sun The real color of the sun is white. We think the sun is yellow because the earth's atmosphere is unlikely to scatter high-wavelength colors, such as red, orange and yellow.
So the colors of these wavelengths are what we see, which is why the sun is yellow. If you leave the earth to see the sun in space, you will find that the true color of the sun is Baise (I have never seen it before, and I wonder if I will find my eyes blinded).
3. The planet with the highest surface temperature in the solar system The planet with the highest surface temperature in the solar system is not Mercury, which is closest to the sun, but Venus. Although Mercury is closest to the sun, its surface temperature can reach 427℃ during the day. Venus has a strong greenhouse effect because of its high density of carbon dioxide gas.
Its surface temperature can reach 500℃, even at night on Venus, it exceeds 400℃, making the average surface temperature of Venus exceed 400℃. By the way, Mercury is the planet with the largest surface temperature difference in the solar system, because its nighttime temperature can drop to-183℃, and the surface temperature difference between day and night is as high as 600℃.
Neptune, the planet with the fastest surface wind speed in the solar system, is a dark spot on Neptune, just like Jupiter's Great Red Spot. It was detected by NASA's Voyager 2 spacecraft in 1989. Although it seems to be the same as Jupiter's Great Red Spot, it is an anticyclonic storm and is considered as a relatively cloudless area.
This spot is about the size of the earth, and it is also very similar to the Great Red Spot on Jupiter. At first, it was thought to be the same storm as the Great Red Spot, but closer observation showed that it was black and oval.
The wind speed around the big black spot is as high as 2400 kilometers per hour (1500 miles), which is the fastest wind in the solar system. The big black spots are thought to be holes produced when Neptune is covered with methane, similar to ozone holes on the earth. 5. The period of revolution of Venus in planets of the solar system has 224.7 Earth days, and its rotation period is 243 Earth days. That is to say, the day of Venus is longer than the previous day 18 Earth days. Where is the real "like a year"?
As for the reason, it is still inconclusive, but it should be noted that Venus is the only big planet in the solar system that rotates in the opposite direction, and its rotation direction is from east to west, which means that the sun rises in the west and sets in the east when viewed from Venus.
9. Little scientific knowledge
Small scientific knowledge
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.
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.
Why does cicada shed its skin?
Cicada's shell (exoskeleton) is hard and can't expand with the growth of cicada. When the cicada grows to a certain stage, the cicada's exoskeleton restricts its growth, and the cicada loses its original exoskeleton, which is cicada slough.
How do bees make honey?
First, the bees spit the sweet juice of the flowers they picked into an empty hive. At night, they suck sweet juice into their honey stomachs to make it, and then spit it out and swallow it. It takes 100~240 times to make sweet honey.