1. Electricity on the Move
Unit 4
Lesson 1
Electricity on the Move

2. Electricity on the Move
Every single day we use electronics to make our life easier to do many different things.
There are many different types of electrical devices. Each one has the same two basic functions:
To control the flow of electrical energy
To change electrical energy into another form of useful energy

3. What Would I Do Without It?
List three electrical devices that you use often. If you had no electricity what would you use instead?
Electronic Devices
What Would I Do Without It?
Computer
Books
Ipod
Wind up phonograph
Lights
Candles

4. What is an Electric Circuit?
Electricity is a kind of energy. Have you ever you ever rubbed a balloon on your head and then stuck it to a wall? If so, you charged the balloon with electricity.

5. The electrical force that holds a balloon to the wall is called static electricity. Static electricity is electricity held in one place on the surface of an object.
Recall that metals conduct their electricity and do not hold a charge in one place. Non-metals on the other hand can do not conduct their charge and the charge is localized in one spot on the object. Think back to what an atom looks like with its protons, neutrons and electrons.

6. The nucleus contains protons which contain a positive charge
The nucleus contains protons which contain a positive charge. Neutrons do not have any charge and are neutral. The electrons contain a negative charge.
In an object that conducts electricity the electrons can move freely from atom to atom as long as they are replaced by another one in their spot.
In Non-conductors the electrons cannot pass from atom to atom. This means that if an atom gains or losses electrons it will contain a negative or positive charge.

8. If two non-conductors are rubbed together, electrons will transfer from one object to another. One object gains and the other losses electrons. This gives the objects negative and positive charges.

9. If an object gains or loses a bunch of electrons it will become charged and follow the law of electric charges.
Law of electric charges: Like Charges repel one another, and unlike charges attract one another.
Think of magnets. The opposites attract each other and the like charges repel each other.

10. Static electricity can also “jump” from one place to another in a sudden burst of electrical energy. This is called a Static Shock. Lightning is an example of a very large static shock. The shock you sometime get from a doorknob is a tiny static shock.

11. A static shock can be very powerful, but it is not very useful
A static shock can be very powerful, but it is not very useful. In order to run electrical devices, we need a steady flow of electricity. The steady flow of electricity is called an electric current.

12. Statics Lab