100 interesting popular science facts that primary school students must know, collect them for your treasure

1. Why do we see lightning first and then hear thunder? (Light waves propagate faster than the speed of sound in the air) 2. Who was China’s first Olympic champion? (Xu Haifeng) 3. Who are the names below? (The Immortal of Poetry—Li Bai, the Saint of Poetry—Du Fu, the Ghost of Poetry—Li He, the Landscape Poet—Meng Haoran, the Pastoral Poet—Tao Yuanming) 4. What does the moon revolve around? How long is one cycle? (Earth) (24 hours) 5. What is the smallest and coldest star? (Pluto) 6. What is the earth’s thick covering? (Atmosphere) 7. Why are black boxes installed on airplanes? (It is used to record various situations on the plane during the crash and help people understand the cause of the accident) 8. What are the customs during the Spring Festival? (Sweeping houses, setting off explosives, posting Spring Festival couplets, eating New Year’s Eve dinner, etc.) 9. What animals can predict earthquakes? (Cow, horse, donkey, rabbit, chicken, dog, snake, rat, dog, cat, swallow, eagle, etc.) 10. Which plant blooms first and then leaves? (Forsythia, jasmine, wintersweet, peach tree, pear tree) 11. Why are the medicine bottles light-colored? (Because light colors can reflect light, dark colors will absorb more light when exposed to sunlight, and medicines will easily deteriorate) 12. Who invented the steam engine? (Watt) 13. Which dinosaur is the toughest? (Stegosaurus) 14. What is the blood of the earth? (Magma) 15. Why can’t you turn off the lights and watch TV? (The screen and images of the TV are relatively small. When watching in the dark, the vision must be highly concentrated and expanded, and the person is particularly sensitive to the strong reflection of the light on the TV screen, which will irritate the eyes and reduce vision) 16. Chinese People Who are the ten marshals of the Republic? (Zhu De, Peng Dehuai, He Long, Chen Yi, Liu Bocheng, Luo Ronghuan, Xu Xiangqian, Nie Rongzhen, Lin Biao, Ye Jianying) 17. Why don’t rabbits drink water? (Because the rabbit’s staple food, vegetables, contains a lot of water, which is enough for the body’s needs. If there is too much water in the intestine, it will suffer from gastroenteritis. But when the rabbit’s body is short of water, it can also drink water) 18. What is a shooting star? ? (Referring to the light trails produced by small solids or dust in space that break into the earth\’s atmosphere) 19. Who is the outstanding astronomer in Chinese history? (Zhang Heng) 20. Who is the inventor of the battery? (Volts) 21. Who were the first two astronauts to reach the moon? (Armstrong and Aldrin) 22. In which province and city is Taishan located? (Taishan City, Shandong) 23. What are the names of the five most precious gems in the world? (Opal, emerald, diamond, sapphire, ruby) 24. What is the name of the ancestor of fish? (Amphioxus) 25. What is the name of the most poisonous spider in the world? (Wolf Spider) 26. What is the capital of France? (Paris) 27. What is the capital of England? Answer: London. 28. What are the four seafood in my country? Answer: Large yellow croaker, small yellow croaker, hairtail, and squid. 29.What is the largest mammal? Answer: blue whale. 30. What is the largest amphibian? Answer: Giant salamander. 31.What kind of animal is the ancestor of amphibians? Answer: fish. 32. What was the earliest crop? Answer: wheat. 33. Who is the person who got rid of China’s oil-poor label? Answer: Li Siguang. 34. Who invented anesthesia? Answer: Hua Tuo. 35.Who issued the eraser?Clearly? Answer: Edison. 36. Who invented the missile? Answer: Qian Xuesen. 37.What is the lifespan of a sea turtle? Answer: 300 years old. 38. China is the country with the largest number of tigers in the world, so what is the most valuable? The answer is Siberian tiger. 39. Which animal was the first domesticated by humans? Answer: Chicken. 40.What is the tallest mammal? Answer: Giraffe. 41. What was the first green plant to appear on earth? Answer: Cyanobacteria. 42.What is the plant that represents peace? Answer: Olive branch. 43.What is the symbol of UFO? Answer: Flying saucer. 44. How many years can a cactus live without watering? Answer: 6 years. 45.What is the blood type of Camellia? Answer: Type O. 46. ​​Who is the father of hybrid rice in my country? Answer: Yuan Longping. 47.Who invented the airplane? Answer: The Wright brothers. 48. What are the four major evils in the world? Answer: Rats, mosquitoes, flies, bed bugs. 49. Won the first international gold medal for China? Answer: Wu Chuanyu. 50. Who was the first to predict a comet? Answer: Harley. 51.What is the common language of the Han people? Answer: Mandarin. 52. What animal is called the insect killer? Answer: Mantis. 53. When did China participate in the Olympic Games? Answer: 1924. 54. How long did the longest marathon take? Answer: 54 years. 55. Is table tennis the “national sport” that the Chinese are proud of? Answer: Yes. 56. Which country invented ice cream? Answer: China. 57. Who is the first person in the world to win the Robert Prize twice? Answer: Marie Curie. 58. In which dynasty did soy sauce begin? Answer: Qin and Khan period. 59. Who invented the earliest landmine? Answer: The patriotic name is General Qi Jiguang. 60.What types of calligraphy are there? Answer: regular script, cursive script, seal script, official script, running script, and regular script. 61. Which country celebrates Thanksgiving? Answer: United States. 62. On which month and week of the year is Thanksgiving? Answer: The fourth Sunday in November every year. 63. Are plants air purifiers? Answer: Yes. 64. Which mosquitoes suck human blood? Answer: Female mosquitoes. 65.What is a short story with profound meaning? Answer: fable. 66. How many solar terms are there in the Chinese lunar calendar? (24) 67. According to our country’s laws, citizens under how many years of age are called minors? (18) 68. Are penguins endemic to the Antarctic or the Arctic? (Antarctica) 69. There are four oceans on the earth. Which ocean is located in the northernmost part of the earth? (Arctic Ocean) 70. What do the “five elements” in ancient Chinese culture refer to? (Metal, Wood, Water, Fire and Earth) 71. The four great inventions in the history of our country are (printing, gunpowder, compass and papermaking) 72. When people sleep, the best sleeping position is on the right side. 73. Who are the two astronauts who piloted the Shenzhou VI? (Fei Junlong and Nie Haisheng) 74. \”Smoking is harmful to health\” World No Tobacco Day refers to every year (May 31) 75. \”White pollution\”, which is commonly known as \”white pollution\”, is a type of solid waste, which refers to ( Waste plastic) 76. Who was the earliest famous doctor in China? Answer: Bian Que 77. my country’s mostWhat is the famous mythological novel? Answer: \”Journey to the West\” 78. The four ancient civilizations are the birthplace of human culture and the cradle of the emergence and growth of digital. Who are these four ancient civilizations? Answer: Babylon, Ancient Egypt, India, China 79. Who is the scientist known as the \”Father of Hybrid Rice\”? Answer: Yuan Longping 80. In which year was the world’s first man-made earth satellite successfully launched by the former Soviet Union? Answer: 1957 81. What is the largest organ in the human body? Answer: skin. 82. Who was the first Soviet cosmonaut to fly into space? Answer: Gagarin 83. What is the tallest skyscraper in the world? Answer: Chicago Sears Tower 84. Who invented the automobile? Answer: Mercedes-Benz 85. Who was the first person to sail around the world? (The famous Portuguese navigator Magellan) 86. Who invented the electric light? (Edison) 87. Who is China’s “Father of Missiles”? (Qian Xuesen) 88. Who was the earliest aircraft designer in my country? (Feng Ru) 89. What is called a \”sea light cavalry\”? (Speed ​​Boat) 80. Will the bacteria in the refrigerator be frozen to death? (No) 81. Who was the first mathematician to accurately calculate pi between 3.1415926 and 3.1415927? (Zu Chongzhi) 82. Who is the first female academician of the Chinese Academy of Sciences (Lin Qiaozhi) 83. Knowledge is power “This is a famous quote from a famous British scientist and philosopher? (Bacon) 84. Who is the founder of the theory of biological evolution? (Darwin) 85. Which star is the closest to the earth? (Sun) 86. We often see some straight black and white bars on product packaging. What are they? (Barcode) 87. The fable \”Sit in a well and look at the sky\” \”What animal is sitting in the well in the picture? (frog) 88. When eating Western food, which hand should we use to hold the knife and which hand to hold the fork? (Knife in the right hand and fork in the left hand) 89. What are the four treasures of the study? Four things? (pen, ink, paper and inkstone) 90. What is the first surname in \”Hundred Family Surnames\”? (Zhao) 91. Who invented papermaking among the four great inventions in ancient China? (Cai Lun) 92. The world Which is the smallest bird on earth? Answer: hummingbird. 93. What are the four famous works of Chinese classical literature? (\”A Dream of Red Mansions\”, \”Journey to the West\”, \”Water Margin\”, \”The Romance of the Three Kingdoms\”) 94. Among the opera characters, white facial makeup is Are generally good people or bad people? (Bad people) 95. The largest island in China is: (Taiwan Island) 96. Can an electric fan cool the air? (No) 97. In ancient China, there was a saying of \”playing music, chess, calligraphy and painting\”, please ask What does piano mean? What does chess mean? (Guzheng and Go) 98. How many bones are there in the human body? (206) 99. Which is the largest inland saltwater lake in China? (Qinghai Lake) 100. The first one China established in Antarctica What is the name of the research station? (Great Wall Station)