歡迎閱讀《週日科學版》!我們每週日都要為你介紹可以在家中進行的有趣科學實驗。你可以在《科學日誌》中記錄自己做了哪些活動,這樣就可以將所學的紀錄下來,比較這些結果,也許還可以利用它們來設計新的實驗!先看一下《科學日誌》的點子再開始吧。展開實驗之前,記得要獲得大人許可喔!
Temperature’s effect on molecular speed
溫度對分子速度的影響
In this experiment we’re going to find out if temperature affects the speed of molecules in water.
PHOTO: MICHAEL KEARNEY, TAIPEI TIMES
What you will need:
Six clear glasses
Food coloring
Water (cold, room temperature and hot)
Salt
A spoon
►Fill two glasses with cold water, two with water that is about room temperature and two with very hot water. You can use ice or a freezer to get cold water, but when you’re doing the experiment, none of the water should be frozen. Be careful not to burn yourself with the hot water!
►Put about a teaspoon of salt into three of the glasses (one of each temperature). Stir.
►Wait a few minutes for the water you just stirred to stop moving. It’s important for the next step that the water in each glass is absolutely still.
►Add two drops of food coloring to each of the glasses. Observe the way the food coloring moves through the water.(MICHAEL KEARNEY, STAFF WRITER)
在本實驗中,我們要來查明溫度是否會影響水中分子的速度。
所需材料︰
六個乾淨的玻璃杯
食用色素
水(冰水、溫水和熱水)
鹽
一個湯匙
►裝兩杯冰水、兩杯室溫下的水,和兩杯非常燙的熱水;你可以用冰塊或冰庫製成冰水,但在進行實驗時,不能用結冰的水;用熱水的時候要小心別燙傷自己!
►在三杯水中(三種溫度各一)各加入一茶匙鹽巴,然後攪拌。
►等個幾分鐘,等你剛剛攪拌的水都靜止下來;杯中的水需完全靜止後才能進行下一個步驟。
►在六杯水中都各自加入兩滴食用色素,觀察食用色素在水中運動的情形。(翻譯︰袁星塵)
The strongest earthquake to hit Taiwan in 25 years killed at least 16 people and damaged dozens of buildings, but the destruction was largely contained thanks to decades of preparedness work. Taiwan sits on the “Ring of Fire,” an arc of intense seismic activity along the Pacific Rim, and — much like neighboring Japan — has a long history of catastrophic quakes. How does April 3 compare with other recent quakes? The April 3 earthquake, which measured 7.4 on the moment magnitude scale, was felt across Taiwan. It was the most severe since a 7.6 magnitude quake in 1999 killed
A: Artificial intelligence technology has been causing controversy lately: a student was caught cheating with AI to win the grand prize in an art contest. B: That’s so absurd. Does this mean that AI paints better than humans? A: Maybe. Luckily, the student was later disqualified. B: And more absurdly, it’s becoming more and more popular to use AI technology to “resurrect” people. A: Yeah, some netizens even posted videos featuring the late singer CoCo Lee, who was “resurrected” by them with AI software. A: 人工智慧的爭議不斷,有學生違規使用AI參加美術展,甚至贏得首獎。 B: 真誇張,這是不是代表AI比人類還強大? A: 或許吧,幸好得獎資格被取消。 B: 還有更誇張的︰讓死者重現的「AI復活」技術越來越熱門。 A: 對啊,還有網友製作已故歌后李玟「復活」的影片呢! (By Eddy Chang, Taipei Times/台北時報張聖恩)
Around the time of the Dragon Boat Festival in June, the streets of Taiwan are filled with the delightful aroma of zongzi, a traditional snack made of sticky rice wrapped in leaves. The leaves are folded into a cone and then filled with sticky rice and other ingredients such as braised pork belly, peanuts and salted duck egg yolks. The filled leaves are then tightly tied with kitchen twine and ready for cooking. 每到六月端午時節,街頭巷尾就會飄出粽子的香氣。粽子是將糯米包進粽葉的傳統美食,先將粽葉折成圓錐狀塞入糯米,以及紅燒肉、花生、鹹鴨蛋黃等配料,用棉線綁緊後即可烹煮。 Dragon Boat Festival (n. phr.) 端午節 aroma
It’s another school day with the same ritual. You wake up to your smartphone’s alarm, scroll through messages during your commute, and listen to your favorite playlist with your wireless earbuds between classes. These devices, integrated smoothly into your daily routine, certainly make life more convenient. However, where do these devices end up after you replace them? In fact, the issue of electronic waste is a growing global concern. According to the United Nations, in 2019 alone, we generated an astonishing 53.6 million tons of e-waste—an average of 7.3kg per person. Projections hint at the figure soaring to 110