Circuits and electricity

Which one of these objects is a electrical conductor?

• Metal

• Plastic

• Rubber

• Paper

Which of these objects is an electrical insulator?

• Metal

• Rubber

• Copper

• Gold

Why is electrical wiring usually made from copper?

• Because copper is shiny

• Because copper conducts electricity

• Because copper is not magnetic

• Because copper insulate electricity

Tags

NGSS.4-PS3-2

NGSS.5-PS1-3

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

• To make it look pretty

• To help electricity flow along the wire

• To make it safe

• To add more energy

Tags

NGSS.4-PS3-2

A material that does NOT let electricity pass through it is called ...

• An electrical conductor

• An electrical insulator

• An electrical source

• An electric appliance

What is a circuit with several paths for electricity to flow?

• conductor

• series circuit

• parallel circuit

• open circuit

Tags

NGSS.4-PS3-2

What is a circuit that only has ONE path for electricity to flow?

• series circuit

• closed circuit

• parallel circuit

• light bulb

An incomplete circuit is shown.
To complete the circuit, a wire should be placed from —

• Point D to Point C
• Point B to Point C
• Point A to Point D
• Point B to Point D

Tags

NGSS.4-PS3-2

Why do electricians always wrap wires in plastic?

• Plastic comes in many different colors

• Plastic is a good electrical conductor

• Plastic makes the wires easy to bend

• Plastic is a good electrical insulator

Tags

NGSS.5-PS1-3

Which of these materials is a good conductor of electricity?

• Rubber

• Metal

• Newspaper

• Glass

Tags

NGSS.5-PS1-3