2. Electric Charges and Current

3. Imagine you had to move a rock that was bigger than you were.

4. Would this work?? Why or Why not?

5. What about this?? Why or why not?

6. What about this?? WHY OR WHY NOT?

7. Force
There is a greater overall force if multiple forces are all pulling/pushing in the same direction.

8. electron movement in an insulator
electron movement in a conductor
LG: to understand the basics of current electricity
Current Electricity: the controlled flow of electrons through a conductor

9. What is the difference?
Static Electricity and Electrical Current are made of the same thing, electrons.
However, in static electricity there is a build up of electrons on an object or area; while electrical current is the flow of electrons in a specific direction.

10. Electric Current
Electrical devices need a steady flow of electricity. The steady flow of charged particles is called electrical current. The flow continues until the energy source is used up, or disconnected.

11. Conductors
Allow the easy flow of electricity, loosely bound electrons that are free to move from atom to atom
metals like aluminum, gold, copper and silver are examples of good conductors.

12. Insulators
Insulators – resists the flow of electrons making the object safe to handle
plastic, rubber, glass
Keep charges away from body

13. Resistors
Resistors-allow electrons to flow but slow them down considerably. This allows the current to slow down.

14. Superconductors
There are some materials that have practically no resistance at extremely low temperatures. These are called Superconductors. Superconductors have many uses including use in power lines to increase efficiency as well as in computers to improve speed.

15. Grounding
As discussed charges/electricity likes to move through lines with lower resistance. Because of this we have developed a procedure known as grounding. Grounding means providing a harmless, low-resistance path-a ground- for electricity to flow.
This is used to protect buildings from damage from lightning strikes.
A “Lighting Rod” moves lighting strikes into the ground where the charge is absorbed.

16. The nature of Electrons
Electrons are lazy. They only move together when they “have” to and have a couple things in place.
An easy, complete, route to follow. (Circuit)
Pressure to push them through the circuit. (Voltage)

17. VOLTAGE (V)
It is the push or pressure behind current flow through a circuit, and is measured in (V) volts. 

18. CURRENT
Current refers to the quantity/volume of electrical flow. Measured in Amps (A)

19. RESISTANCE
 Resistance to the flow of the current. Measured in Ohms. How much energy is “lost” in the circuit as the electrons pass through it.

21. Before you leave
Write down 4 things you learned about today in detail. Must be in sentence form.

22. http://montage. baschools. org/SAFARI/montage/play. php
&location=local&filetypeid=12

23. Activity
Tug of War

24. Electric Charges and Current

25. Water gun
What makes a water gun shoot out water?