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！
Have you ever seen a lava lamp? This week we are going to have our very own funky homemade lava fun! Make sure you wear old clothes and work in the kitchen, as this experiment can get very messy!
What you will need:
PHOTO: CATHERINE THOMAS, TAIPEI TIMES
a glass jar
salt
vinegar
water
food coloring
vegetable or baby oil
sodium bicarbonate
a bright lamp or a torch
glitter (optional)
★ Fill the jar a quarter full of water.
★ Now add two quarters of vegetable oil. You should still have a quarter of the space left at the top of the jar. Do the oil and the water mix?
★ Add several drops of food coloring. Watch what happens. Where do the drops go? Do they mix with the other fluids?
★ Drop in a tablespoon of bicarbonate of soda. Where does it go and how does it act?
★ Add a tablespoon of vinegar. Where does the vinegar go?
★ Wait for everything to settle.
★ Now add a large pinch of salt. Watch what happens.
★ Wait for the mixture to settle. Now add some more salt.
★ Try shining the lamp or torch behind the lamp.
★ If you like you can add some glitter now. Where does the glitter sit in the mix?
(CATHERINE THOMAS, STAFF WRITER)
你看過「熔岩燈」嗎？本週我們要來體驗自製時尚熔岩燈的樂趣！務必穿舊衣服在廚房進行這個實驗，因為過程會很髒亂唷！
所需材料︰
一個玻璃瓶
鹽
醋
水
食用色素
沙拉油或嬰兒油
碳酸氫鈉（小蘇打）
一盞亮燈或是一個手電筒
亮粉（非必要）
★ 在玻璃瓶內裝入四分之一滿的水。
★ 接著再加入四分之二的沙拉油，此時你的瓶子應該還剩四分之一的空間；油和水會混在一起嗎？
★ 滴入幾滴食用色素，仔細觀察有什麼變化產生，色素滴入後會跑到哪裡？會和瓶中其他液體混合嗎？
★ 加入一大湯匙小蘇打粉，小蘇打粉會在瓶中哪處？又會起什麼作用？
★ 再加入一大湯匙的醋，醋會流到何處？
★ 靜置，等所有的東西都沉澱下來。
★ 加入一大撮鹽，觀察其變化。
★ 等瓶中混合液體靜止後，再加入一些鹽。
★ 試著用燈或手電筒從後方照射玻璃瓶。
★ 如果你有準備亮粉，現在可以把它們加進去，亮粉會跑到哪裡去呢？（翻譯：袁星塵）
Monosodium glutamate (MSG) has been used in cooking for over a century to enhance flavor. It is often found in Chinese dishes and many other cuisines. Despite its common use, many people misunderstand the safety of MSG. The bad __1__ of MSG started in the late 1960s, when a letter to the New England Journal of Medicine described symptoms like a racing heart, weakness, and numbness after the writer ate Northern Chinese food. While no specific cause was __2__, a series of questionable studies in 1968 began to point the finger at MSG. In one such study, neurologist Herbert Schaumburg and
A: The World Expo 2025 is set to open in Osaka, Japan, on Sunday, with 158 countries and regions and nine international organizations participating in the event. B: Wow, what’s the theme this time? A: The theme is “Designing Future Society for Our Lives.” B: Do you want to go? How long will it last? A: It’ll run for 184 days, until Oct. 13. Maybe we can go to Osaka during summer vacation. A: 2025年世界博覽會預計週日將在日本大阪開幕，158個國家或地區及9大國際組織將參與盛會！ B: 哇這次的主題是什麼？ A: 主題是：「創造閃耀生命光輝的未來社會」。 B: 你想要去嗎？展出多久啊？ A: 世博會共展出184天到10月13日，或許我們暑假時可以去大阪玩。 （By Eddy Chang, Taipei Times／台北時報張迪）
A: The World Expo 2025 is about to open in Osaka. Is Taiwan going to participate in the event too? B: Sure, the Taiwan External Trade Development Council (TAITRA) will launch a Taiwan pavilion named “Tech World.” A: That sounds cool, and it can showcase our national strength in technology. B: The theme is “Connecting the world to create better future lives together.” The pavilion aims to attract over one million visitors. A: I hope humans can really create better future lives through this year’s fair. A: 2025年世博會即將開幕，這次台灣也會參加嗎？ B: 當然啦，外貿協會的台灣館將以「Tech World」名義參展！ A: 聽起來蠻酷的，應該是想強調台灣的科技實力。 B: 策展主題則是：「連結世界，共創未來美好生活」，希望能吸引到100萬人次參訪。 A: 希望藉由這次世博會，人類真的能共創美好生活。 （By Eddy Chang, Taipei Times／台北時報張迪）
The study had several issues. Small sample sizes made it hard to draw __7__ conclusions. Additionally, taking a __8__ like pure MSG on an empty stomach is likely to make a person ill in any case. Choosing individuals who already had a history of the symptoms could have created a bias because they were likely to __9__ the reactions again. When real scientific research on the effects of MSG was eventually done, many of the myths surrounding it were proven __10__. The U.S. Food and Drug Administration and other global organizations have found MSG safe to eat. Today, MSG
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