Which of these materials is a good conductor of electricity?

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

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

Which of these substances conducts electricity the best?

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

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

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

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

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?

Early scientists most likely saw a discharge of electricity for the first time when observing a —

Benjamin Franklin conducted this famous experiment that showed lightning was —

Benjamin Franklin discovered the form of energy produced by lightning. Experiments with lightning killed many people before he discovered that lightning is a form of —

Bits of paper are attracted to the surface of this balloon. What attracts the paper pieces to the balloon?

The picture shows a comb that was used on a cold, dry day. Which of these cause the bits of paper to be attracted to the comb?

A bar magnet is placed on a table, and a sheet of blank paper is placed over the magnet. What could be sprinkled on the paper to show the magnetic field of the bar magnet?

In this picture, the iron filings show the shape of the magnetic —

To make an electromagnet, a conductor should be coiled around —

Michael Faraday showed how electric current in a wire produces —

Which of these can most easily produce magnetic fields?

Which energy transformation most likely occurs in a steam iron?

Which form of energy is being used by the toaster?

The energy used to move most bicycles is an example of what type of energy?

Which form of energy is best shown in this picture?

Which item is designed to change electrical energy into heat energy?

An electric motor is designed to turn electrical energy into —

When in operation, this tool transforms electrical energy mostly into —