2018年CUT题目中英文版.docx

1、Invent Yourself Construct a simple seismograph that amplifies a local disturbance by mechanical, optical or electrical methods. Determine the typical response curve of your device and investigate the parameters of the damping constant. What is the maximum amplification that you can achieve? 1、 自主发明 建造一个可以通过力学、光学或电学方法放大局部扰动的简单地震仪。确定你装置的标准响应曲线并且研究阻尼常数的参量。你能达到的最大放大率是多少？ 2. Colour of Powders If a coloured material is ground to a powder, in some cases the resulting powder may have a different colour to that of the original material. Investigate how the degree of grinding affects the apparent colour of the powder. 2、 粉末的颜色 如果一个有色的材料被研磨成粉末，在某些情况下被研磨成的粉末将会呈现和原有材料不同的颜色。探究研磨程度是如何影响粉末的表面颜色的。 3. Dancing Coin Take a strongly cooled bottle and put a coin on its neck. Over time you will hear a noise and see movements of the coin. Explain this phenomenon and investigate how the relevant parameters affect the dance. 3、 舞蹈的硬币 取一个冷却程度很大的瓶子并且将一枚硬币置于瓶颈处。过段时间你将听到声音并且观察到硬币的移动。解释这一现象并且研究影响此舞蹈的相关参量。 4. Herons Fountain Construct a Heron’s fountain and explain how it works. Investigate how the relevant parameters affect the height of the water jet. 4、 Heron的喷泉 建造一个Heron的喷泉并解释它的工作原理。研究相关参量是如何影响水柱高度的。 5. Drinking Straw When a drinking straw is placed in a glass of carbonated drink, it can rise up, sometimes toppling over the edge of the glass. Investigate and explain the motion of the straw and determine the conditions under which the straw will topple. 5、 吸管 当一根吸管被放置于一杯碳酸饮料里时，吸管会上升，有时会翻出杯子边缘。研究并解释吸管的运动并且确定吸管翻出时的条件。 6. Ring Oiler An oiled horizontal cylindrical shaft rotates around its axis at constant speed. Make a ring from a cardboard disc with the inner diameter roughly twice the diameter of the shaft and put the ring on the shaft. Depending on the tilt of the ring, it can travel along the shaft in either direction. Investigate the phenomenon. 6、 环形注油器 一个涂过油的水平#放置的圆柱形杆以恒定的速度绕着它的轴旋转。用硬纸板圆盘做成一个内径约为杆直径的两倍的圆环并套在杆上。根据环的倾斜程度，它可以沿杆向任意两个方向移动。探究这一现象。 7. Conical Piles Non-adhesive granular material