1. Electricity

2. Electric Charges
Electric charges are much like magnets; opposites attract and like charges repel each other.
Two positive charges repel
Two negative charges repel
One positive and one negative attract

3. Electric Force
There is also an electric field which is similar to a magnetic field
The electric field is the area around a charged object in which that particular charge is applied to the objects around it
This does not change the fact that if you have multiple charges in a space, opposites will attract and like charges will repel

4. Static Electricity
When an object has a build up of electrons on one side of it and that causes the protons of the object it touches to cling to that object
Example: If you rub a balloon on your hair, then your hair will stick to the balloon. (It will also stick to the wall)

5. Transferring a Charge
There are many different ways to transfer a charge, which basically means that the electrons are being transferred.
Ways of transferring include:
Friction
Conduction
Induction

6. Friction When two objects are rubbed together it creates friction
This is why if someone drags their feet when they walk then touch a metal door handle they gets shocked.
The electrons are being transferred to the persons feet from the floor

7. Conduction
This is when electrons are transferred just by touching an object that has been charged
So this is when the electrons transfer from your sock and shoe to your foot then up to your hand.
There has been no other cause other than that they are all touching

8. Induction
This is when the charges in the item that you are getting ready to touch are re-arranged so that the opposite charges are ready to bind to those on the other object.
This is the actually the touching of the door knob and the shock that occurs.