Magnets and Electricity Review

Front

What is a magnet?

Back

A magnet is an object that produces a magnetic field, which can attract or repel certain materials, typically metals like iron.

Front

What materials are typically attracted to magnets?

Back

Materials that are typically attracted to magnets include iron, nickel, cobalt, and some alloys.

Front

What happens to a balloon when it is rubbed against hair?

Back

The balloon becomes electrically charged due to the transfer of electrons from the hair to the balloon.

Front

What is static electricity?

Back

Static electricity is the accumulation of electric charge on the surface of objects, which can result from friction.

Front

How does a charged balloon pick up small pieces of paper?

Back

The charged balloon induces a charge in the paper, causing an attractive force between the balloon and the paper.

Front

What are opposite charges?

Back

Opposite charges refer to positive and negative electric charges that attract each other.

Front

What are like charges?

Back

Like charges refer to two positive or two negative electric charges that repel each other.

Front

What is the principle of magnetic poles?

Back

Every magnet has two poles: a north pole and a south pole. Like poles repel each other, while opposite poles attract.

Front

What is the effect of distance on magnetic force?

Back

The magnetic force between two magnets decreases as the distance between them increases.

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current.