競賽題目

1.     Inverse clepsydra (物理)

Connect two bottles together and fill them with water and light particles (e.g. plastic toy bullets). How much time does it take for the particles to ascend to the top, if the 'hourglass' is turned upside down?

逆漏壺

將兩個瓶子連接在一起，並在其中填充水和輕粒子（例如塑膠玩具子彈）。如果把「沙漏」倒過來，粒子需要多長時間才能上升到頂部？

2. Ice cubes and soup (物理)

A sensational trick is to use ice cubes to remove fat or excess oil from hot soup. The fat cools down and sticks to ice in this demonstration. Reproduce this experiment in controlled conditions to support or dismiss the effectiveness of the method.

冰塊和湯

一個絕妙的技巧是用冰塊去除熱湯中的脂肪或多餘的油。在這個演示中，脂肪冷卻並粘在冰上。在受控條件下重複實驗以支持或駁回該方法的有效性。

3. Liquid umbrella (物理)

A thin liquid dome is formed if water is ejected through parallel plates or falls on a spoon. The dome may serve as an umbrella and prevent water droplets from falling through. Investigate the effectiveness of such a liquid umbrella.

液體傘

如果水通過平行板噴射或落在湯匙上，則會形成薄薄的液體圓頂。這圓頂可以充當雨傘並防止水滴落下。調查這種液體傘的有效性。

4. Oil spot photometer (物理)

A paper card with an oil spot is placed between two light sources. Depending on the position of the card, the spot appears either brighter or darker than the surrounding paper. The spot visually disappears when the card is in one specific location. Is this effect suitable to measure the luminosity of a dim (e.g. a glow stick or the Moon) or a very bright (e.g. the Sun) light source?

油點光度計

將帶有油點的紙卡放置在兩個光源之間。取決於位置在卡片上，該斑點看起來比周圍的紙張更亮或更暗。目視現場當卡片位於某一特定位置時消失。這個效應是否適合衡量在昏暗（例如螢光棒或月亮）或非常明亮（例如太陽）光源的亮度？

5. Two ends of a rope(物理)

A piece of a rope is dropped on the floor. Investigate and explain the distribution of distances between the two ends of the rope.

繩子的兩端

一條繩子掉在地板上。研究並解釋距離的分佈繩子的兩端之間。

6. Rotating beam (物理)

A long beam can freely rotate in the horizontal plane. If a small rotor is mounted on one end of the beam far from the pivot, the beam may start turning. What happens if two rotors are mounted? Explain and investigate the motion of the beam.

旋轉梁

長梁可以在水平面內自由旋轉。如果一個小轉子安裝在一端當梁遠離樞軸時，梁可能會開始轉動。如果兩個轉子同時運作會發生什麼安裝？解釋並研究樑的運動。

7. Marinated meat (化學)

Marinades are used to tenderize meat. How do properties of meat samples depend on the time of exposure and the chemical composition of marinade?

醃肉

醃料用於使肉質變嫩。肉類樣品的特性如何取決於處理時間醃料的暴露和化學成分？

8. Caffeine in tea leaves (化學)

If dry tea leaves are heated under a cold glass (in optional presence of magnesium oxide), small crystals of caffeine are formed on the glass. Compare the yield of this technique to other easy methods of extracting caffeine from tea. What sorts of tea have the highest caffeine content?

茶葉中的咖啡因

如果乾茶葉在冷玻璃下加熱（可選有氧化鎂環境），小玻璃上會形成咖啡因晶體。將此技術的產量與其他簡單技術進行比較從茶葉中提取咖啡因的方法。哪種茶的咖啡因含量最高？

9. Anodic dissolution (化學)

A hole may be drilled in a metal plate by anodic dissolution. What is the maximum thickness of the plate that can be drilled by using an AA battery?

陽極溶解

可以透過陽極溶解在金屬板上鑽孔。最大厚度是多少可以使用 AA 電池鑽孔的板子嗎？

10. Precipitates (化學)

If a chemical reaction product is insoluble, precipitation occurs in the solution. Some of precipitates are chunky, others cause a clear liquid to become cloudy, and others appear as solid sediment at the bottom of the test tube. Suggest a problem to investigate the factors that affect the appearance of precipitates in chemical reactions of your choice.

沉澱

如果化學反應產物不溶，則溶液中會發生沉澱。一些沉澱物呈塊狀，其他沉澱物導致透明液體變得混濁，還有一些沉澱物呈固體試管底部有沉澱物。提出一個問題來調查影響因素您所選擇的化學反應中沉澱物的出現。

11. Parallax (生物、物理)

A potential method for estimating distances with a naked eye is using the parallax effect. Look at a distant object with one eye and line up a thumb with the object. If looked with another eye, the thumb appears shifted. Collect quantitative data on how accurate this method is in comparison to other methods where only naked eyes are used.

視差

用肉眼估計距離的一種潛在方法是利用視差效應。用一隻眼睛看遠處的物體，並將大拇指與該物體對齊。如果用另一隻眼睛看，拇指會出現移位。收集定量數據，以了解該方法與僅使用肉眼的其他方法相比的準確性。

12. Myopia (生物)

Myopia is common in the World and among IYNT participants, in particular. Propose a study that would introduce quantitative parameters describing image perception by myopic humans.

近視

近視在世界各地很常見，尤其是在 IYNT 參與者中。提出一項研究這將引入描述近視人類影像感知的定量參數。

13.Dark side of the Moon(地科)

Determine experimentally and theoretically how dark is the side of the Moon facing away from the Sun. Does the illumination of this side depend on the lunar phase?

月球的黑暗面

從實驗和理論上確定月球背對太陽的一面有多暗。這邊的照度取決於月相嗎？

14.Stormglass(地科、化學)

A stormglass is supposed to help judging the weather by observing the appearance of a sealed ampoule containing liquid and crystals of various shapes (one recipe is to dissolve potassium nitrate (2.5 g) and ammonium chloride (2.5 g) in distilled water (33 mL), dissolve camphor (10 g) in ethanol (40 mL), slightly heat and mix the two solutions together). Produce one or several stormglasses with various recipes and study their behavior in different weather conditions over sufficiently long time.

風暴玻璃

風暴玻璃應該通過觀察含有各種形狀的液體和晶體的密封安瓿的外觀來説明判斷天氣（一種配方是將硝酸鉀（2.5 克）和氯化銨（2.5 克）溶解在蒸餾水（33 mL）中，將樟腦（10 g）溶解在乙醇（40 mL）中，稍微加熱並將兩種溶液混合在一起）。用各種配方生產一個或多個風暴玻璃，並在足夠長的時間內研究它們在不同天氣條件下的行為。

獎項

頒發對象與獎勵內容

參賽證書

凡全程參賽隊伍，皆可獲頒參賽證書

優等作品入選獎

經作品審議小組依據簡報初稿及首場競賽稿進行評分，平均達80分者，得頒發優等作品入選獎。

最佳辯士獎

單場總成績達9分，全組皆可獲頒予最佳辯士獎狀。

銅獎

凡累積一場優勝者得獲頒銅獎獎狀及獎金1000元

銀獎

凡累積二場優勝者得獲頒優勝銀獎獎狀及獎金2000元

金獎

凡累積三場優勝者得獲頒優勝金獎獎狀及獎金3000元

最佳指導獎

凡指導學生參賽並榮頒金獎者，每一隊得頒發給指導老師最佳指導獎獎狀及獎金1000元。