1. electricity: Page 70
OBJECTIVE: SWBAT define and give examples of the two different types of electricity.
VOCABULARY: static electricity current electricity circuit series circuit parallel circuit

2. Write these questions onto page 70
Electricity
Write these questions onto page 70
What are the two different types of electricity?
Draw a series circuit.
What is the drawback to a series circuit?
Draw a parallel circuit.

3. What is Electricity?
Electricity is simply the movement of electrons through an object.
There are two types of electricity. Electricity that suddenly jumps and electricity that steadily flows.

4. How Can You Have Too Many Electrons?
Electrons are found in the electron cloud outside the nucleus.
Some matter does not have a tight hold on their electrons. The electrons can easily be rubbed off.

5. Static Electricity
When electrons are rubbed off one material they can build up on the other material. This causes a negative charge to build up.
Nature always tries to keep things balanced. If one object has too many electrons, then nature will try to get rid of those extra electrons.

6. Getting Rid of Electrons
When electrons suddenly jump from an object that is negatively charged, it is called a static discharge.
Getting “shocked” when you sometimes touch a door knob and lightning are examples of static discharges.

7. Uses of Static Electricity
Static electricity might, at first, seem rather useless, but it has several very important uses.
Copy machines.
Electrostatic painting
Air cleaners.

8. Current Electricity
The type of electricity in our homes does not jump from one object to another, it flows like water through a pipe.
This type of electricity is called current electricity. Current electricity is produced by generators in power plants.

9. How Does Electricity Get From the Power Plant to Your House?
The electricity produced in power plants by generators is sent through high voltage power lines.
The power lines send the electricity to transformers that change the high voltage to a lower voltage that is safer.

10. How Does Electricity Get From the Power Plant to Your House?
The electricity then goes through more wires to the electric meter that measures how much energy you use.
Next, the electricity goes through a circuit breaker box that shuts off the electricity if there is a problem.
Finally, the electricity travels through the wires in your walls and to the outlet.

11. What’s a Circuit?
Current electricity can only travel through a circuit. The electricity must have a uninterrupted path from the source of the electrons back to the source.
A circuit must have at least 3 parts.
Something to use the electrons, this is called a resistance.
A source of electrons, this can be a battery.
A switch is sometimes included to turn off the electricity.
Conductors to carry the electrons, these are wires.

12. What’s a Series Circuit?
There are two types of circuits.
This is a series circuit.
What is the source of electrons?
What is the resistance?
What is the conductor?
What happens if one of the bulbs burn out?

13. What’s a Parallel Circuit?
This is a parallel circuit.
What happens if one of the bulbs burn out?
Are the circuits in your house series or parallel?

14. What’s this? This is a combination of a series and a parallel circuit.
This is the electrical symbol for a battery
What happens if bulb A burns out?
What happens if bulb B burns out?
What happens if bulb C burns out?
What happens if bulb D burns out?

15. Check that the answers to these questions are in your notes.
Electricity: page 70
Check that the answers to these questions are in your notes.
What are the two different types of electricity?
Draw a series circuit.
What is the drawback to a series circuit?
Draw a parallel circuit.

16. VOCABULARY Static electricity-A buildup of charges on an object.
Current electricity-The continuous flow of electrons.
Circuit-A continuous path for electricity to flow.
Series circuit-An electrical circuit with a single path.
Parallel circuit-An electrical circuit with multiple paths.