Conductors and Insulators

Why are metals useful for making electrical wire?

• Metals do not bend.
• Metals hold much heat.
• Metals are insulators.
• Metals are conductors.

Which is NOT an insulator.

• Wool
• Plastic
• Copper
• Glass

Something electricity can't move through is called a(n) ______.

• conductor
• wire
• shoe
• insulator

Water is a insulator.

• True
• False

Which one is an insulator? 

• Silver 
• Copper 
• Mechanical pencil
• plastic 

Rubber is a insulator.

• true
• false

Which one is a conductor? 

• wood 
• iron 
• plastic spoon 
• paper 

Aluminum

• Insulator
• Conductor 

What are Conductors?

• A conductor is a material that allows electric charge to move through it as an electric current. Usually the charge is carried by electrons, and the conductor is a metal.
• an insulator
• an conductor 
• A material or an object that does not easily allow heat, electricity, light, or sound to pass through it. Air, cloth and rubber are good electrical insulators; feathers and wool make good thermal insulators. Compare conductor.

Why is electrical wiring usually covered with a layer of plastic?

• To help electricity flow along the wire
• To make it look pretty
• To make it safe