Magnetism

Front

What is magnetism?

Back

Magnetism is a physical phenomenon produced by the motion of electric charge, which results in attractive and repulsive forces between objects.

Front

What materials are typically magnetic?

Back

Common magnetic materials include iron, nickel, and cobalt.

Front

What is a magnetic field?

Back

A magnetic field is an invisible field around a magnet where magnetic forces can be observed.

Front

How can you separate iron fillings from sand?

Back

You can use a bar magnet to attract the iron fillings away from the sand.

Front

What is the difference between geographic north and magnetic north?

Back

Geographic north refers to the direction towards the North Pole, while magnetic north refers to the direction a compass needle points, which is towards the magnetic south pole.

Front

Why does the red needle of a compass point north?

Back

The red needle points north because the North Pole of the compass is actually the magnetic south pole, and opposites attract.

Front

Are magnetic fields visible?

Back

No, magnetic fields are invisible.

Front

Which of the following is NOT a magnetic material: cobalt, copper, or nickel?

Back

Copper is NOT a magnetic material.

Front

What happens when like poles of magnets are brought together?

Back

Like poles repel each other.

Front

What happens when opposite poles of magnets are brought together?

Back

Opposite poles attract each other.