3 things needed to make a circuit 1

3 things needed to make a circuit: 1. Battery - energy 2. Wire – conductor, transfers the electricity 3. Indicator – tells you if circuit is working Ex: light, sound, heat, magnetism…

• Also called “open circuit” • Wires are not connected properly

What do you notice about the incomplete circuit? • Electricity cannot flow so indicator doesn’t work.

• Also called “closed circuit”. • All wires are connected. • Wires touch positive and negative part of battery.

• Electricity flows easily, indicator works.

Circuit with only one path for electric current to flow through

Choose one of these pics and draw in notebook. Label.

picture diagram symbol diagram What do you notice about these two pictures? They both represent the same outcome!

Circuit with multiple paths for electric current to flow through

Series Parallel Get it?

How do you know if electricity is flowing 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.

• Stop electricity from flowing • Poor conductors of electricity • Ex: rubber, plastic, cloth, and glass

Why do electric plugs have a rubber coating? Rubber stops electricity from flowing , protects us Rubber is an insulator Draw and label.

Need to know this!!! **Electricity can be converted to produce: heat, light, sound, magnetism or movement. What do these produce? *Know at least 3 examples.