Presentation on theme: "Static Electricity Most objects have no overall charge and are neutral. Uncharged objects become charged by gaining or losing electrons. Loses electrons."— Presentation transcript:
1 Static ElectricityMost objects have no overall charge and are neutral.Uncharged objects become charged by gaining or losing electrons.Loses electrons it has more protons OR (+) charges and has an overall POSITIVE (+) chargeGains electrons it has more electrons OR (-) charges and has an overall NEGATIVE (-)chargeTHE BUILDUP OF CHARGES IS CALLEDSTATIC ELECTRICITY
2 Static ElectricityCharges build up on an object, but they do not flow continuously.
3 Transferring ChargeThere are three methods by which charges can be transferred to build up static electricity: charging by friction, by conduction, and by induction.
4 TRANSFERRING CHARGESFriction: 2 uncharged objects rub together, some electrons move from one object to anotherConduction: a charged object touches another object, electrons can be transferred(more negative to more positive)Induction: movement of electrons to one part of an object that is caused by the electric field of a second object
5 Transferring ChargeElectroscopes are instruments that can be used to detect the presence of a charge.
6 Static Discharge: The loss of static electricity as electric charges transfer from one object to another is called STATIC DISCHARGE produces a spark because the moving electrons heat the air LIGHTNING is an example of Static discharge.