MAGNETSSS!

This week we learned about Electric Charges, Forces, and Fields.  One of the basic concepts of this unit (also something I understand pretty well) was about the electric charges.  Their are 3 types of charges: positive (protons), negative (electrons), and no charge (neutron). Protons are represented by a +1.  Electrons are represented by a -1. Neutrons have no charge, so their symbol is 0.  According to the Charge Force Law, like charges will repel each other and unlike charges will attract each other.  For example, if 2 object are both negative, they will repel each other.  If one is positive and one is negative they will attract.  If two objects are neutral, they will have no effect. Also, if one object is either positive or negative and the second object is neutral, they will attract.  I related this concept of physics to my refrigerator door.  Everyday I go in and out of the fridge to get food to eat.  I see the calendar on the door everyday as I open and close the door.  The calendar is hanging from a magnet which is on top the fridge door.  I made the connection from the door and the magnet to this physics concept of electric charges.  Because the magnet is able to stick to the fridge door means that they have opposite charges.  The magnet sticks to the fridge door because it is attracted to it. It all makes sense now!!