1. Changing Circuits * Electricity

2. Standard Students will understand features of static and current electricity and that electricity is a form of energy

3. Review

4. * Examples of Static Electricity Laundry sticking together Hair standing up after jumping on a trampoline Combing or brushing clean dry hair Getting “shocked” by someone Shuffling across carpet Lightning

5. * How do you know static electricity is present A crackling sound A spark can be seen and felt Items cling together

6. Lightning is a giant spark of static electricity that forms in the clouds. Lightning is caused by the movement of positive and negative charges toward one another. During a storm the particles in a cloud become statically charged by the action of the wind blowing Them around the cloud. The stronger source of static electricity moves towards the weaker source causing the flash that we see as lightning. What is Lightning?

7. What holds a static charge? Metal, Wood and Glass Plastic and Rubber What does not hold a static charge?

8. What holds a week attraction? Tissue Paper, Glitter, Sawdust, Paper Dots, Puffed Rice Erasers, Yarn, Pins, Paperclips What holds a strong attraction?

9. Does everything hold a static charge? No

10. * Definitions Static Electricity: Builds charges in one place Current Electricity: A discharge of electricity that moves along a pathway

11. * Definitions Incomplete Circuit: A piece not connected – the light is off Complete Circuit: A finished circuit with every piece attached – the light is on

12. * Definitions Power Source: The source of electricity = battery Pathway: The path the electricity follows = wire

13. * Definitions Load: Uses the electricity = light bulb Switch: Opens and closes the pathway = switch

14. * Illustrate the Circuit

15. * Illustrate and Label a Switch __________________________ ______ load pathway switch power source

16. Changing Circuits * Electricity

17. * Experiment Time Power Source

18. * Power Source How does changing the power source affect the circuit? The more batteries there are, the brighter the light

19. * Experiment Time Pathway Source

20. * Pathway Source How does changing the pathway affect the circuit? The more wires there are, the light doesn’t change

21. * Experiment Time Load Source

22. * Load Source How does changing the load affect the circuit? The more bulbs there are, dimmer the light

23. * Experiment Time Switch Source

24. * Switch Source How does changing the switch affect the circuit? All switches have to be in the on position in order for the light to turn on

25. What We Learned We learned how changing the power source, load, pathway and adding switches affect the flow of electricity