1. + Circuits

2. + Why can’t you use lightning to power electrical devices? Lightning releases large amount of electricity. Devices need CURRENT to flow.

3. + What is electric current? Continuous flow of electrons through a material

4. + What is the rate of electric current? Amount of charge that passes through a wire in an amount of time

5. + What is an Ampere or amp? Amount of charge flowing past a point each second Andre Marie Ampere

6. + Wire A or Wire B. Wire A has more amps… More amps means more electricity flowing There is more charges (electrons) flowing in wire A than in wire B.

7. + Does electric current automatically exist in a material? NO WAY!!! What does it need? A specific and completed path to flow or follow

8. + To produce electric current… Charges must flow from one place to another

9. + What is an electric circuit? A complete, unbroken path through which electrons can flow

10. + Why is a racetrack like an electric circuit? Cars can flow in a complete loop. If a piece is missing the cars can’t move.

11. + What would happen if a piece of the racetrack was removed? Current couldn’t flow, so the cars couldn’t move.

12. + Closed versus Open Closed Circuit Closed, complete, unbroken path Open Circuit Incomplete or broken path

13. + What features do all circuits have? 1. Device run by electrical energy called a resistor 2. Source of electrical energy 3. Connected by conducting wire

14. + What are the roles of the following in a circuit? Energy Source Makes charges move around or flow in a circuit Resistor Transforms electrical energy into something (like light) Switch Opens and closes the circuit

15. + Racetrack

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20. + Symbols

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