Magnets and 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

Which materials are typically magnetic?

Back

Materials that are magnetic include iron, nickel, and cobalt.

Front

What is a magnetic field?

Back

A magnetic field is the region around a magnet where magnetic forces can be detected.

Front

What happens when a magnet is cut in half?

Back

When a magnet is cut in half, each half becomes a new magnet with its own north and south poles.

Front

What is the North pole of a magnet?

Back

The North pole of a magnet is the end that points towards the Earth's geographic North when freely suspended.

Front

What is the South pole of a magnet?

Back

The South pole of a magnet is the end that points towards the Earth's geographic South when freely suspended.

Front

What is the rule of magnetic poles?

Back

Like poles repel each other (North-North or South-South), while opposite poles attract each other (North-South).

Front

What is an electromagnet?

Back

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

Front

How can you make a stronger electromagnet?

Back

You can make a stronger electromagnet by increasing the number of coils of wire, increasing the current, or using a ferromagnetic core.

Front

What is the Earth's magnetic field?

Back

The Earth's magnetic field is a magnetic field that extends from the Earth's interior out into space, protecting the planet from solar wind.