Conductors and Insulators of electricity

Energy produced by the movement of electrons.

• electricity
• motion
• open circuit
• conductor

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Material that allows electric current or heat to flow through easily.

• electromagnetic field
• conductor
• open circuit
• electric current

Material that PREVENTS electric current or heat from flowing.

• electromagnetic field
• electric current
• insulator

A conductor

• Is usually a metal

• Conducts heat

• Can be a copper wire

• All of the above

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An insulator

• Is usually a metal

• Opposes electrical current meaning electric charges do not flow freely

• Conducts electrical current very easily

• Works by electrons jumping from atom to atom through a wire

The best insulators are

• Plastic, rubber, wood, glass

• Silver, air, paper, silicon

• Copper, aluminium, gold, steel

• Ceramic, fabric, paper clip, cork

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Attached to this electrical circuit is copper. Copper is a conductor of electricity therefore the bulb should

• Glow a lot brighter

• Turn off immediately

• Instantly get very hot, then cool down quickly

• Be dimmer

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What is the conductor in the picture?

• Light bulb

• Battery

• Wires

• Switch

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Why are the poles of a power line in our street made of wood?

• Wood is a conductor- they stop electrical current from the power lines hitting the ground

• So that during thunderstorms in winter, there isn't as much electrical current in the power line

• Because electrons can move faster through wood compared to any other material

• Wood is an insulator- they stop electrical current from the power lines hitting the ground

Which of these is not an electrical insulator

• Wood

• Plastic

• Silver

• Glass