1. Electricity Unit J

2. Do Now: https://www.youtube.com/watch?v=igK- DRB5faU https://www.youtube.com/watch?v=igK- DRB5faU

3. Measuring Electricity Ammeter – measures electricity – Measures current in Amps – Current – moving electricity

4. Components Parts of a circuit:

5. Questions? Does the current change be having an ammeter in the circuit? Does the current change by having an extra bulb?

6. Do Now: Current is the amount of electricity flowing through a circuit. What happens if the current is to high?

7. What Happens When you heat Steel Wool? https://www.youtube.com/watch?v=v7M18IO bc6c https://www.youtube.com/watch?v=v7M18IO bc6c

8. Resistor Resistor – makes the current smaller using resistance Why is reducing current important? – Metal gets hot as current runs through it

9. Fuses Fuse – a piece of wire designed to melt if the current Typically located in the plug Every plug has a different fuse, depending on how much current the appliance can take

10. Plugs

11. Do Now: Complete the worksheet and place it into your book. First person to finish and glue in gets 2 house points

12. Series and Parallel Circuits Simple Circuit – Only cell connected to bulb Series Circuit – Everything connected in a loop Parallel Circuit – “Branches” to connect everything

14. Current Flow

15. Benefits of a Parallel Circuit Current flows through the branches, even if one branch is broken

16. Current in the Circuit Parallel Circuits – divided amps Series Circuits – equal amps

17. https://phet.colorado.edu/en/simulation/circ uit-construction-kit-dc

18. Do Now: Open your books to page 143, answer questions 3 and 4 after reviewing the circuit diagrams

19. Electricity Inside You Impulses – electrically signals sent through your body to your brain Nerves – impulse travel along your nerves

20. Pacemakers Impulses keep your beating, when they cannot reach your heart properly you may have to get a pacemaker to keep your heart beating properly

21. When your heart stops beating… Doctors can use a defibrillator to “restart” your heart – It sends an electrical current through your body

22. Electric Shock Electric Shock – when electricity is sent through the body by an outside source

23. Natural Resistor Your body acts as a natural resistor When wet, the resistance is lowered – You will be more affected by an electric current

24. Activity: Discuss with a partner: How can electrical shocks be useful?