The content of the handwritten newspaper on popular science knowledge for primary school students is as follows:
1. Why do you see lightning first and then hear thunder? Light waves travel through air faster than the speed of sound.
2. Who is 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, and 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? Cleaning the house, setting off firecrackers, posting Spring Festival couplets, eating New Year's Eve dinner, etc.
9. What animal 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 medicine bottles light-colored? Because light colors can reflect light, dark colors will absorb more light when exposed to sunlight, and the medicine 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. What types of calligraphy are there? Regular script, cursive script, seal script, official script, running script, and regular script.