SOL 5.4 Electricity Released Test Questions

Which of these best completes the circuit?

• Rubber band

• Metal nail

• Leather shoelace

• Wooden toothpick

Which of these materials is a good conductor of electricity?

• Rubber

• Glass

• Metal

• Newspaper

Electric lights will not come on unless their electrical circuit is a —

• open circuit

• series circuit

• closed circuit

• short circuit

A fifth-grade class constructed this circuit. Which of these objects most likely made the light glow when connected to points X and Y?

• Plastic straw

• Cotton string

• Aluminum foil

• Rubber eraser

Which of these substances conducts electricity the best?

• Wood

• Brick

• Copper

• Plastic

The electrician in this picture is wearing rubber gloves for protection. The purpose of the rubber gloves is to —

• keep the electrician dry

• create an electrical circuit

• produce electricity

• insulate the electrician

What material would be safest to use as an insulator to cover electrical wires?

• Aluminum

• Tin

• Rubber

• Water

Copper wire is often wrapped in plastic. Plastic material is a good —

• electromagnet

• insulator

• circuit

• current

Many electrical wires are wrapped with a plastic coating because plastic is —

• less expensive than steel

• more dense than copper

• able to keep its shape

• a good insulator

This instrument can be used to see if materials conduct electricity. Which of these groups contains items that could all conduct electricity to complete the circuit?

• Rubber ball, plastic comb, nail

• Paper clip, penny, screw

• Cork, dollar bill, tweezers

• Pencil, eraser, spoon