1. What is Static Electricity?

2. Cues Electric Charge Static Electricity Charge What is Static Electricity Law of Electric Charges

3. What is Static Electricity? Static electricity occurs when there is a build up of electric charge on the surface of a material. It is called static electricity because the charges don’t move. The electricity we use everyday involves moving charges.

4. Charge The electron is negatively charged. The proton is positively charged. The neutron has no charge, it is neutral.

5. Charge Most things have the same number of electrons and protons in them. They don’t have any overall charge. If this isn’t true interesting things can happen.

6. Static electricity Static electricity is caused when certain materials are rubbed against each other. Electrons can be rubbed off one material and on to another. The material that has got extra electrons is now negatively charged The material which has lost electrons is positively charged.

7. What is Static Electricity? Electric Charge: a negative or positive charge that exerts an electric force. How to make an electric charge? -electrons can be added or removed from atoms fairly easily Remove electrons: substance becomes positive Add electrons: substance becomes negative

8. What is Static Electricity? We don't draw atoms, just "+" and "–" to illustrate the overall charges

9. What is Static Electricity? We don't draw atoms, just "+" and "–" to illustrate the overall charges e.g. a neutral object 5 + 5 - overall charge0

10. What is Static Electricity? We don't draw atoms, just "+" and "–" to illustrate the overall charges e.g. a positive object 5 + 3 - overall charge2+

11. What is Static Electricity? We don't draw atoms, just "+" and "–" to illustrate the overall charges e.g. a negative object 5 + 8 - overall charge3 -

12. What is Static Electricity? Static Electricity: an imbalance of electric charge on the surface of an object.

13. What is Static Electricity? Law of Electric Charges:

14. What is Static Electricity? Law of Electric Charges: 1. Opposite charges attract

15. What is Static Electricity? Law of Electric Charges: 1. Opposite charges attract 2. Like charges repel

16. What is Static Electricity? Law of Electric Charges: 1. Opposite charges attract 2. Like charges repel 3. Charged objects attract neutral objects

17. http://www.exploratorium.edu/science_explore r/roller.html http://www.exploratorium.edu/science_explore r/roller.html http://www.youtube.com/watch?v=M4tOkUpK Kqo http://www.youtube.com/watch?v=M4tOkUpK Kqo