Electricity and magnetism

When two objects with opposite charges are brought close to each other what will happen?

• The objects will repel each other.

• The objects will attract each other.

• Nothing, unless they touch.

• They will explode.

An object that attracts certain metals is a . . .

• magnet

• current

• generator

• power source

A temporary magnet formed when electric current flows through a wire coiled around certain metal cores is an . . .

• electromagnet

• generator

• circuit

• magnetic pole

What produces electricity by using a coil of wire and a magnet?

• generator

• magnetic field

• circuit

• electromagnet

The area around a magnet where the force of a magnet can act is called the . . .

• magnetic field.

• magnetic pole.

• circuit breaker.

• generator.

Of what is all matter made?

• small particles with electric charges called atoms

• magnetic fields

• cells

• star stuff

What two things does every circuit have?

• power source and unbroken path

• insulators and conductors

• magnets and generators

• static electricity and current electricity

Material that does not allow electricity to flow through it easily is called an . . .

• conductor

• insulator

• generator

• magnet

An unbroken path through which negative charges can flow is a . . .

• circuit

• magnetic field

• generator

• conductor

Objects with the same kind of charge . . .

• attract each other.

• repel each other.