Warm Up: What is this picture an example of? How does it work? What would happen if you placed a magnet inside the coils?

Electricity

Vocabulary Conductors- are materials where electric currents flow freely through Insulators- are a type of material in which charges are not able to move freely Resistors- resists the flow of a charge Electric Circuit- is a complete pathway through which electric charges can flow

How does a light bulb turn on and off??? Open CircuitClosed Circuit

Electrical Circuits Basic Components 1. Source of electrical energy Name an example: 2. Device that uses energy Name an example: 3.Connected by conducting wires and switch What type of wire did we use to connect the light bulb and battery?

Draw an Electrical Circuit

Static Electricity The build up of charges on an object is called static electricity **remember that electrons can flow from one atom to another ** Insulators are types of material that hold on to their electrons tightly Conductors are types of material that loosely hold their electrons

In static electricity, charges build up, but they do not flow continuously like an electrical current – –

Static Examples of good insulators Wood Rubber Plastic Glass Examples of good conductors Gold Silver Copper Aluminum

Transferring Charges 1. Friction- is the transfer of electrons from one object to another by rubbing 2.Conduction- is the transfer of electrons from a charged object to another charged object by direct contact 3. Induction- is the movement of electrons to one part of an object caused by the electric field of another object (Lightning and the ground) See page 51 for examples!!!

Static Discharge Static Discharge- The loss of static electricity as electric charges move off an object. * How come during the summer months you don’t experience as much static shock?? On a humid summer day the air is filled with water molecules that absorbed the extra electrons *Why do you get shocked when you touch a door knob? Why do we have lightning??? A shock or lightning bolt is an example of electrons jumping to help make the object they were once on neutral. Spark = jumping electrons

Generators Electric Generator- A device that converts mechanical energy into electrical energy