Magnetism Review

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 attracted to magnets?

Back

Materials that are attracted to magnets include ferromagnetic materials like 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. It is represented by lines that show the direction and strength of the magnetic force.

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 an electromagnet?

Back

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. It can be turned on and off.

Front

How does a compass work?

Back

A compass works by using a small magnet (the needle) that aligns itself with the Earth's magnetic field, pointing towards the magnetic North.

Front

What is the difference between a permanent magnet and an electromagnet?

Back

A permanent magnet produces a constant magnetic field, while an electromagnet's magnetic field can be turned on and off and can vary in strength.

Front

What is magnetic declination?

Back

Magnetic declination is the angle between magnetic north (the direction a compass points) and true north (the direction of the geographic North Pole).

Front

What happens when like poles of magnets are brought together?

Back

When like poles of magnets (North-North or South-South) are brought together, they repel each other.