Conductors vs 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

Tags

NGSS.MS-PS3-3

What is the difference between a conductor and an insulator?

• An insulator allows electricity to flow through it easily and a conductor does not
• A conductor allows electricity to flow through it easily and an insulator does not.
• An insulator is magnetic and a conductor is not
• A conductor is magnetic and an insulator is not

Which of the following materials is an electrical conductor?

• silver
• silver-colored plastic
• cork
• rubber

Why is electrical wiring usually made from copper?

• Because copper is shiny
• Because copper conducts electricity
• Because copper is not magnetic

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

A closed path through which an electrical current flows is called a ____________________.

• Path
• Diagram
• Circuit
• Battery

What object would best complete this circuit?

• A battery

• a piece of yarn

• an insulator

• a conductor

You know that the object connected to the wires is a conductor because:

• The light bulb is glowing bright.
• It's a complete circuit.
• It's a closed circuit.
• The object is shiny.

Tatrys knows that the light bulb will turn on because the circuit:

• includes an insulator.
• is an open circuit.
• makes a complete path.
• includes a battery.