1. WARM UP DRAW a diagram of the circuit you made in your notebook.
Show the direction of energy flow in the circuit from battery to bulb.
Describe in detail how you made the circuit and how you know it works. Must be more that 2 sentences.

2. Electric Charge

3. What is Electric Charge?
QUICK WRITE:
For 2 minutes, write in your IAN explaining where electric charges come from and why.
Rules - You MUST write for the entire time, even if you write the exact same thing over and over again!

4. What is Electric Charge?
Protons = ______ Charge
Electrons = _________ Charge
Neutrons =__________ Charge
When Protons = Electrons, atoms are said to be ELECTRICALLY NEUTRAL (no net charge)
Proton = +
Electrons = -
Neutrons = no charge

5. Conductors and Insulators
Conductors – objects in which electrical current easily passes through such as metals
Insulators – objects that resist the flow of electrical current such as plastic, wood, paper, and rubber

6. Where is the conductor in this picture? How do you know?
Conductors
Where is the conductor in this picture? How do you know?

7. Where is the insulator in this picture? How do you know?
Insulators
Where is the insulator in this picture? How do you know?

8. The flow of ELECTRONS through a conductor.
WHAT IS ELECTRICITY?
The flow of ELECTRONS through a conductor.

9. What is the Force between Electric Charges?
Electric Force!
Causes of Force
Distance between the charges
Amount of charge
OPPOSITE charges attract and LIKE charges repel!

10. Electric charge (q)
SI Unit of charge is the Coulomb [C]

11. Balloon Demo!
What do these two pictures have in common? Talk with your partner for 30 seconds and BE PREPARED TO SHARE!

12. STATIC ELECTRICITY
The accumulation of excess electric charge. (not balanced)
Ex. Lightning

13. Electric force vs Gravitational Force strength
Quick Write: Which is stronger electric force or gravitational force? How do you know? Defend your choice.
Share your choice with the class!
At the atomic level the electric force is stronger. Notice the path of the water is changed by the electrical charge.

14. Electric force vs Gravitational Force strength
Let’s find out!

15. ANSWER The correct answer should be the Electric Force! Why?
Because like you witnessed in the video the electric force can overcome the gravitational pull of the Earth; and the Strong Electric Force is responsible for holding together the protons and neutrons in the nucleus of an atom. An atom’s nucleus can only be split by nuclear fusion, which cannot be done on Earth and gravity can’t do this!

16. QUESTION 1: Which of the following objects is a good conductor?
A. Water
B. Rope
C. Copper
D. Plastic

17. QUESTION 2: Which type of force is strongest? A. Gravitational force
B. Electrical Force

18. QUESTION 3:
Which of the following balloon configurations depict the correct charges of the balloon and wall?

19. QUESTION 5: The imbalance of an electrical charge is also known as:
A. Charged electricity
B. Static Electricity
C. Contact Electricity
D. Negative Electricity

20. ELECTRICAL CIRCUITS

21. What is this a picture of?- +

22. What is electric current?
Electric Current (I) - the flow of electrons from the (+) terminal to the (-) terminal of a cell/battery through wires and components - +

23. Electric Field
Electric Field – when the electrons of a current are in motion, lines of electric force rotate around the electron, or between two charges.

24. Open and Closed Circuits
Open circuit = switch is open = no current is flowing = bulb does not light
Closed circuit = switch is closed = current is flowing = bulb lights up

25. Circuit Diagram & Symbols
Cell/Battery
Resistor
Light Bulb
Light Bulb Resistor
Wires
Switch

26. Types of Circuits
Series Circuit – current takes only one path and is the same at each point. (One Wire connects ALL)

27. Series Circuits
If one bulb blows out, it breaks the circuit and all the bulbs go out
If you add more cells/batteries to a series circuit, the bulbs burn brighter

28. Types of Circuits
Parallel Circuits – current takes more than one path and is NOT the same at each point. (Multiple Wires)

29. Parallel Circuits
If one bulb blows out, there is still another complete circuit for the other bulb to stay lit

30. Draw these circuits in your Notebook
Draw these circuits in your Notebook. Label each one as either Series or Parallel.
A – Parallel
B – Series

31. Conductor or Insulator?

32. Brighter or Dimmer?
Dimmer

33. Series or Parallel?
Series

34. Brighter or Dimmer?
Brighter

35. Series or Parallel?
Parallel

36. Series or Parallel?
Series

37. Series or Parallel?
Parallel