Ev & Elpidio Salt Extension

The reason why the salt stick sticks to the insulator is because the salt is neutral and the insulator is negative. which means that the salt would stick to the insulator and bounce off the conductor. our proof is that when we charge the plastic rod and then hold it above the salt, the salt is forced upwards and sticks to the rod. and when we charge the pie tin and place it above the salt, the salt bounces right off becuase it is the same charge as the salt.

Candace, Cecilia, Farhad Dancing and Sticking Salt Mystery

In this extension we had to figure out why salt bounces off conductors and why it sticks to insulators. The salt sticks to the insulator because the electrons can not pass through the pipe. The salt bounces off the conductor because the electrons in the salt are being repelled off the pie tin. Conductors carry a charge, but insulators do not. So the insulators can not attract objects with the opposite charge.

Dancing and Sticking Salt Mystery-Hannah

In this extension, I determined why the salt sticks to the insulator but bounces off the conductor. I determined that it's due to the fact that, conductors carry a charge while insulators do not. The evidence I have for this is the first experiment and the third experiment. In the first experiment, the salt was able to stick to the tube due to the fact that the tube was a conductor. But in the third experiment since I brought a charged insulator over it, it did not work because insulators do not carry a charge. The reasoning I have for this once again is, conductors will always carry a charge not matter what so they can attract objects easily. On the other hand, insulators do not carry a charge so they can't attract other objects with an opposite charge.