|
Sunday Science 週日科學
Welcome to Sunday Science! Every Sunday, we're going to guide you through some cool experiments that you can do at home. It's a good idea for you to keep a record of what you do in a Science Journal. That way you can record what you learn, compare results and maybe use them to design new experiments! Have a look at the Science Journal box for some ideas to get you started. Remember to always ask a grown-up's permission before trying out an experiment.
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！
Sunday, Feb 24, 2008,Page 14
|
照片：CATHERINE THOMAS
PHOTO: CATHERINE THOMAS, TAIPEI TIMES
|
Condensation 凝結作用
This week's experiment explains one of those things that you might have noticed, but never really thought about why it happens. In this experiment we are mainly concerned with what happens on the outside of the glass. However as with all science experiments, keep your eyes open for other effects too.
What you will need:
Four glasses (jars will work too)
Ice cubes
Water
★ Take one glass and place it on the worktop. This is your control glass. Observe the glass for 30 seconds. Note any changes you see in your Science Journal.
★ Fill one glass three-quarters full of very warm tap water. Observe the glass for 30 seconds. Note any changes you see in your Science Journal.
★ Fill another glass three-quarters full of tepid tap water. Observe the glass for 30 seconds.
★ Fill another glass three-quarters full of iced water. Observe the glass for 30 seconds.
★ If your experiment doesn't seem to work, you may have a dehumidifier running. Try the experiment again outside.(CATHERINE THOMAS, STAFF WRITER)
本週的實驗可以解釋一個你平常可能會發現，但卻沒有認真想過原理的事；在這個實驗中，我們主要想了解的是「玻璃外發生了什麼事」，然而，就像其他所有的科學實驗一樣，眼睛張大點你也許就會發現其他的結果。
所需材料︰
四個玻璃杯（罐子也行）
冰塊
水
★ 放一個杯子在你的工作檯上，這是你的對照組，觀察這個杯子三十秒，將你觀察到的任何變化紀錄在《科學日誌》中。
★ 將一個杯子中裝四分之三杯有點熱的溫水，觀察這個杯子三十秒，將你觀察到的任何變化紀錄在《科學日誌》中。
★ 將另一個杯子裝四分之三杯微溫的自來水，觀察三十秒。
★ 將另一個杯子裝四分之三杯的冰水，觀察三十秒。
★ 如果你的實驗不太成功，你可以打開除濕機，試著到戶外再實驗一次。（翻譯：袁星塵）
| WHAT'S THE SCIENCE? 科學原理 |
|
Air contains water (H20) in a gaseous form. When gaseous water cools down it becomes liquid. Because the air around the glass with ice water is cooled, the gaseous water in the air becomes liquid. This is called condensation. How well your experiment works depends on the temperature of the room and the humidity of the air. If you have an air conditioner running, it might dehumidify the air, and the experiment won't work.
空氣中包含水（H2O）的氣體狀態，當水氣冷卻下來時會變成液態；因為冰水杯子外圍的空氣受到冷卻，空氣中的水氣就轉換成液態，這個過程稱為「凝結」。你的實驗成功與否要視室內空氣的溫度和溼度而定，如果你有開冷氣，空氣中的水氣會變少，實驗就不會成功了。
|
|
|
| VOCABULARY 今日單字 |
|
1. three-quarters adj.
四分之三 (si4 fen1 zhi1 san1)
2. tepid adj.
微溫的 (wei2 wen1 de5)
3. dehumidifier n.
除濕機 (chu2 shi1 ji1)
4. huff v.t
哈氣 (ha1 qi4)
5. room temperature n.
室溫 (shi4 wen1)
6. humidity n.
溼度 (shi1 du4)
7. gaseous adj.
氣體狀態的 (qi4 ti3 zhuang4 tai4 de5)
8. liquid n.
液體 (yi4 ti3)
9. condensation n.
凝結 (ning2 jie2)
|
|
|
| SCIENCE JOURNAL 科學日誌 |
|
What do you know about air? What kind of gases are in the air? What effect do you think temperature might have on the gases in the air? Do you know what humidity is? Do you know the water cycle? How are clouds formed?
你對空氣了解多少？空氣中包含哪些氣體？你認為溫度對空氣中的氣體有什麼影響？你知道「溼度」是什麼嗎？你知道水的循環嗎？雲是怎麼形成的？
|
|
|
| FURTHER IDEAS 進階點子 |
|
What happens if you add salt to the ice water? Take the mirror and huff on it three times. What happens to the mirror? Place the mirror in the freezer for a few minutes. Take the mirror out of the freezer and huff on it. How is it different from the mirror that was at room temperature? Don't forget to record your observations in your Science Journal.
若你在冰水中加入鹽巴會有何變化？對著一個鏡子哈氣三次，鏡子會有什麼不同？將鏡子放在冰庫裡數分鐘後，把鏡子拿出來再對著它哈氣，這個鏡子和在室溫下的鏡子有何不同？別忘了在《科學日誌》裡記下你的觀察。
|
|
|
| NEXT WEEK 下週預告 |
| For next Sunday's experiment you will need the following special items: A cork and a needle.
下週日的科學實驗，你需要特別準備以下的東西︰一個軟木塞和一根針。
|
|
|
This story has been viewed 875 times.
|
Print
Mail