1. Static Electricity

2. Electricity Electricity is the set of physical phenomena associated with the presence and flow of electric charge. Electricity gives a wide variety of well- known effects, such as lightning, static electricity, electromagnetic induction and electrical current.

3. Charged Particles What particles do we know about that have charges? Static Charge – electric charge that builds up on the surface of an object. Friction – force resisting relative motion of two surfaces in contact. –Removing and transfer of electrons –Charges are NOT being created

4. Electron Affinity Materials have different abilities to hold onto electrons Triboelectric Series If you rub together two materials listed, you can determine which one will become positively charged and negatively charged

5. Moving Electrons Law of Attraction and Repulsion –Opposites attract –Like charges repel Insulators and Conductors –Conductivity – ability of materials to allow electrons to move freely in them Insulator – solid, liquid or gas resisting flow of electrons Conductor – solid, liquid or gas allowing flow of electrons

6. Charged Objects Electroscope – detects static charge Induction –movement of electrons within a substance caused by a nearby charged object, without direct contact between the substance and the object.

7. Charged Objects Lightning – large electrical discharge caused by induction

8. Charged Objects Van de Graff – electrons gathered through friction and brought to the metal sphere