======Jumping Coin with Bernoulli’s Principle======


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**Alternative titles:** Coin Jump into Cup
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====Summary====                   
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====Procedure====  
  - Place a coin on a flat surface near the rim of a lightweight cup.  
  - Hold the cup sideways, positioned just above and slightly in front of the coin.  
  - Blow steadily between the coin and the cup.  
  - Observe as the coin lifts and jumps into the cup, appearing to move on its own.



====Links==== 
Mysterious Coin Jumps Into Cup On Its Own - The Action Lab: 
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====Variations====
  * Try different coin sizes and weights to see which works best.  
  * Experiment with different cup shapes to find the most effective setup.  
  * Test how blowing speed and angle affect the coin’s motion.



====Safety Precautions==== 
  * Use a clean, dry surface so the coin doesn’t slip unexpectedly.  
  * Wash hands after handling coins, as they may carry germs.




====Questions to Consider====
  * Why does the coin move toward the cup instead of away? (Blowing creates faster-moving air between the coin and the cup, lowering the pressure there. Higher surrounding air pressure pushes the coin toward the low-pressure region and into the cup.)  
  * How does this demonstrate the Bernoulli principle? (It shows that faster air movement reduces pressure, allowing external pressure to move objects.)  
  * What real-world examples use the same principle? (Airplane wings, atomizers, and some sports ball curves all rely on Bernoulli’s principle.)