1. Electrical Energy Where does it come from and where does it go?

2. What is Electrical Energy? Electrical Energy is the energy of electric charges.

3. Where Does Electrical Energy Come From? 4 Basic Areas 1. Dry Cell Batteries 2. Wet Cell Batteries 3. Photocells 4. Thermocouples

4. Where Does It Go? Electrical energy can be converted into basically any other type of energyElectrical energy can be converted into basically any other type of energy Energy Heat Light Electrical MechanicalSound Nuclear Chemical

5. But, Where Does Electricity Come From? From ATOMS!!!! The smallest particle a substance can be broken down into

6. Well, then what part of the atom is the important part??? ***the negatively charged particles found outside of the nucleus

7. Well…then how do they move from one object to another? 2 Main Culprits

8. Conductors Materials that negative charges move easily throughMaterials that negative charges move easily through Charges are free to move aroundCharges are free to move around Good conductors: metals such as silver, aluminum, copper, and mercury

9. Insulators A material in which negative charges do not move well Found on electrical wire to keep you from shocks Good Insulators: Plastic, rubber, glass, wood, and air

10. Charging Objects Every object begins as neutral. Meaning it has no charge…we call this a 0 (zero charge).Every object begins as neutral. Meaning it has no charge…we call this a 0 (zero charge). Then, in some situations…they can becomeThen, in some situations…they can become

11. Charge It!!! Objects become charged because they lose or gain electrons Gain = becomes negative Lose = becomes positive

12. Well why do my pants stick to me then, they are insulators right? Right, but also wrong….hmmm The buildup of electric charges on an object Static = does not move

13. Ouch…you shocked me!!! When the static electricity in an object leaves the object Examples: cracking noise, shock, flash of light

14. Opposites Attract!!! Objects that have opposite charges are attracted to each otherObjects that have opposite charges are attracted to each other Result = objects are pulled together

15. Sames Repel!!! Objects that have the same charges are repelledObjects that have the same charges are repelled Result = objects repel each other