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3 things needed to make a circuit: 1. Battery - energy 2. Wire – transfers the electricity 3. Indicator – tells you if circuit is working Ex: light, sound, heat, magnetic effects… •Also called “open circuit” •Electricity cannot flow through – doesn’t work. •Metal wires are not connected properly or there’s a gap in wires. •Also called “closed circuit”. •All wires are connected. Electricity flows easily through circuit. •Wires touch positive and negative part of battery. How do you know if electricity is passing through the circuit? Indicator not working Indicator working Look at your indicator! Indicator not working Not working Indicator working Working Which object would make this bulb light up? • Allow electricity to flow easily through objects. • All metals and water are conductors!!! Ex: iron, steel, copper, aluminum, silver, etc. • Used to stop electricity from flowing • Poor conductors of electricity • Common insulators are rubber, plastic, cloth, and glass That’s why electric plugs have a rubber coating! Wire is covered with rubber. Electric wires are inside the rubber cover *We cover wires with rubber or plastic to insulate the wires and protect our hands from the electricity. Need to know this!!! **Electricity can produce things like: heat, light, sound, magnetism or movement. What do these produce? *Know at least 3 examples.