1. Parallel and Series Circuits

2. WARM UP Compare and contrast electric force and electric field.
What are the 3 ways you can create a charge?
What does the law of electric charges say about 2 objects that are positively charged
Answer questions 9-12 on page 481

3. Moving Charges! Do you remember how to create a charge?
How can we keep a charge going?
Ideas???

4. CIRCUITS
A circuit is a closed path through which electric charges (electrons) flow
Without a path (circuit), electrons will not keep flowing

5. Switches
Sometimes a circuit will contain a switch. A switch is used to open and close a circuit.
A closed (on) switch allows charges to flow by completing the circuit
An open (off) switch stops the flow by breaking the circuit.

6. Parts of a circuit All circuits have 3 parts:
an energy source (battery)
wires
load (changes electric energy into other form)
The load can be a bulb, buzzer, motor or any other device.

7. Let’s practice!

8. Series Circuit All elements connected consecutively
Removing one light breaks circuit
Same current in both lights

9. SERIES CIRCUITS HAS ONLY ONE PATHWAY FOR MOVING CHARGES
IF THERE IS ANY BREAK IN THE CIRCUIT, ALL CHARGES STOP FLOWING AND NO LIGHTS WORK
WHERE MIGHT YOU SEE A SERIES CIRCUIT?

10. How to Wire a Series Circuit!

11. Parallel Circuit Elements connected separately
Remove one light, the others still work normally
Voltage the same across each element

12. How to Wire a Parallel Circuit!

13. Time to start! Pass out activity worksheet Questions on worksheet?
Get materials and get in groups
GO!