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At this site a monthly quiz will be published covering the fields of mathematics, natural sciences and engineering. Answers are given a month later. |
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The answer is PDF formatted. To view PDF files you need Acrobat Reader. If Acrobat Reader is not installed on your PC get free Adobe Acrobat Reader. |
| monthly quiz |
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| july 2003 | 
| What is the maximum possible height of a mountain? | |
| june 2003 | 
| Why does the water flow decrease after some time if a water faucet is only slightly opened? | 
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| may 2003 | 
| This question is valid for once only in German |
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| april 2003 | 
| What does the ratio of forces depend on in blocks and pulleys? |
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| march 2003 | 
| When has the electricity supply been standardized to 230 V in Europe? |
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| february 2003 | 
| Who can switch a square sized 8 x 8 out of the left hand jigsaw puzzle? |
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| january 2003 | 
| What is the meaning of the writing "20 den" with textiles? |
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| december 2002 | 
| What does the accurate tire pressure depend on? |
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| november 2002 | 
| How do the balls at one end of a Newton cradle know how many bumped onto the other end? |
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| october 2002 | 
| Why do some cars blow out exhaust clouds in winter and others don't? |
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| september 2002 | 
| Why does a cake of butter sometimes tilt when a piece is cut off? |
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| august 2002 | 
| Due to which physical effect is moisture kept in the air? |
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| july 2002 | 
| The maximum possible pressure in a tube is a function of material, diameter, and wall thickness. How does the necessary wall thickness change, if the diameter is varied? |
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| june 2002 | 
| Why is it easier to get into a narrow parking place by driving backwards rather than forwards? |
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| may 2002 | 
| Three differently filled bottles are standing on a table. Which bottle stands longest if the table is tilted? a) the empty one, b) the half full one or c) the full one? |
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| april 2002 | 
| Oxygen for breathing is a 21 % fraction in fresh air. Which critical concentration is regarded as exhausted air? |
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| march 2002 | 
| A swimmer is located at the center of a circular lake. A pursuer waiting on the banks of the lake can run four times faster than the swimmer in the water. On land the swimmer could run faster than the pursuer. Is the swimmer able to escape? |
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| february 2002 | 
| How will the room temperature be changed if the refrigerator door is left open? |
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| january 2002 | 
| Imagine you want to steer your bike or motorcycle throug a left hand corner. In which direction do you have to turn the handle-bar? |
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| december 2001 | 
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10 Pf = 0,1 DM = 0,5 DM * 0,2 DM = = 50 Pf * 20 Pf = 1000 Pf = 10 DM Where is the bug? |
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| november 2001 | 
| When you stop to stir your tea all sugar will concentrate at the center of the bottom of your cup. Why isn't the sugar centrifuged outwards? |
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